diff --git a/apps/desktop/src/components/layout/AppSidebar.vue b/apps/desktop/src/components/layout/AppSidebar.vue
index 2ff359f7e..829d5dcbf 100644
--- a/apps/desktop/src/components/layout/AppSidebar.vue
+++ b/apps/desktop/src/components/layout/AppSidebar.vue
@@ -2,8 +2,10 @@
 import { computed, ref } from "vue";
 import { useI18n } from "vue-i18n";
 import { translateBackendError } from "@/i18n/backend-errors";
-import { Upload, Download, FolderPlus, RefreshCw, ChevronsLeft, ChevronsUp } from "@lucide/vue";
+import { Upload, Download, FolderPlus, RefreshCw, ChevronsLeft, ChevronsUp, Trash2, FolderInput, Check, Minus, Square, X } from "@lucide/vue";
 import { Button } from "@/components/ui/button";
+import { Dialog, DialogContent, DialogFooter, DialogHeader, DialogTitle } from "@/components/ui/dialog";
+import { Input } from "@/components/ui/input";
 import LightDropdown from "@/components/ui/LightDropdown.vue";
 import LightTooltip from "@/components/ui/LightTooltip.vue";
 import ConnectionTree from "@/components/sidebar/ConnectionTree.vue";
@@ -22,16 +24,41 @@ const emit = defineEmits<{
   collapse: [];
 }>();
 
+type ImportSource = "dbx" | "navicat" | "dbeaver" | "datagrip";
+
 const { t } = useI18n();
 const connectionStore = useConnectionStore();
 const { toast } = useToast();
 const connectionTreeRef = ref<InstanceType<typeof ConnectionTree>>();
+const showDeleteSelectedConfirm = ref(false);
+const showCreateSelectedGroupDialog = ref(false);
+const selectedGroupName = ref("");
+const UNGROUPED_GROUP_VALUE = "__ungrouped";
 const importSourceItems = computed(() => [
   { value: "dbx", label: t("sidebar.importDbx") },
   { value: "navicat", label: t("sidebar.importNavicat") },
   { value: "dbeaver", label: t("sidebar.importDbeaver") },
   { value: "datagrip", label: t("sidebar.importDatagrip") },
 ]);
+const connectionIdSet = computed(() => new Set(connectionStore.connections.map((connection) => connection.id)));
+const allConnectionIds = computed(() => connectionStore.connections.map((connection) => connection.id));
+const selectedConnectionIds = computed(() => (connectionStore.connectionMultiSelectActive ? connectionStore.selectedTreeNodeIds.filter((id) => connectionIdSet.value.has(id)) : []));
+const selectedConnectionCount = computed(() => selectedConnectionIds.value.length);
+const showConnectionMultiSelectToolbar = computed(() => connectionStore.connectionMultiSelectActive && selectedConnectionCount.value > 0);
+const allConnectionsSelected = computed(() => allConnectionIds.value.length > 0 && selectedConnectionCount.value === allConnectionIds.value.length);
+const selectAllIcon = computed(() => (allConnectionsSelected.value ? Check : selectedConnectionCount.value > 0 ? Minus : Square));
+const selectAllLabel = computed(() => (allConnectionsSelected.value ? t("connectionGroup.deselectAllConnections") : t("connectionGroup.selectAllConnections")));
+const moveGroupItems = computed(() => [
+  ...connectionStore.sidebarLayout.groups.map((group) => ({
+    value: group.id,
+    label: group.name,
+  })),
+  {
+    value: UNGROUPED_GROUP_VALUE,
+    label: t("connectionGroup.ungrouped"),
+    separatorBefore: connectionStore.sidebarLayout.groups.length > 0,
+  },
+]);
 
 async function refreshTree() {
   try {
@@ -45,6 +72,10 @@ function createNewGroup() {
   void connectionTreeRef.value?.createNewGroup();
 }
 
+function selectImportSource(source: string) {
+  emit("import", source as ImportSource);
+}
+
 function collapseAllTreeNodes() {
   connectionTreeRef.value?.collapseAllTreeNodes();
 }
@@ -53,6 +84,66 @@ function focusSearch(): boolean {
   return connectionTreeRef.value?.focusSearch() ?? false;
 }
 
+function clearConnectionMultiSelection() {
+  connectionStore.connectionMultiSelectActive = false;
+  connectionStore.selectedTreeNodeIds = [];
+  connectionStore.selectedTreeNodeId = null;
+  connectionStore.treeSelectionAnchorId = null;
+}
+
+function toggleAllConnectionsSelected() {
+  if (allConnectionsSelected.value) {
+    clearConnectionMultiSelection();
+    return;
+  }
+
+  const ids = allConnectionIds.value;
+  connectionStore.connectionMultiSelectActive = ids.length > 0;
+  connectionStore.selectedTreeNodeIds = ids;
+  connectionStore.selectedTreeNodeId = ids[0] ?? null;
+  connectionStore.treeSelectionAnchorId = ids[0] ?? null;
+}
+
+async function confirmDeleteSelectedConnections() {
+  const ids = selectedConnectionIds.value;
+  if (ids.length === 0) return;
+  try {
+    await connectionStore.removeConnections(ids);
+    for (const connectionId of ids) {
+      connectionStore.disconnect(connectionId).catch((error) => {
+        console.warn("[DBX][connection:delete:disconnect-failed]", { connectionId, error });
+      });
+    }
+    clearConnectionMultiSelection();
+    showDeleteSelectedConfirm.value = false;
+    toast(t("connection.deletedSelected", { count: ids.length }), 2000);
+  } catch (e: any) {
+    toast(t("connection.saveFailed", { message: e?.message || String(e) }), 5000);
+  }
+}
+
+function moveSelectedConnectionsToGroup(value: string) {
+  const groupId = value === UNGROUPED_GROUP_VALUE ? null : value;
+  for (const connectionId of selectedConnectionIds.value) {
+    connectionStore.moveConnectionToGroup(connectionId, groupId);
+  }
+}
+
+function openCreateSelectedGroupDialog() {
+  selectedGroupName.value = "";
+  showCreateSelectedGroupDialog.value = true;
+}
+
+function confirmCreateSelectedGroup() {
+  const name = selectedGroupName.value.trim();
+  if (!name || selectedConnectionIds.value.length === 0) return;
+  const groupId = connectionStore.createConnectionGroup(name);
+  for (const connectionId of selectedConnectionIds.value) {
+    connectionStore.moveConnectionToGroup(connectionId, groupId);
+  }
+  showCreateSelectedGroupDialog.value = false;
+}
+
 defineExpose({ focusSearch });
 </script>
 
@@ -62,55 +153,125 @@ defineExpose({ focusSearch });
       <div class="flex items-center gap-px px-3 text-xs font-medium text-muted-foreground border-b bg-muted/20" :class="classicLayout ? 'h-9' : 'h-10'">
         <span class="flex self-stretch items-center truncate" data-tauri-drag-region>{{ t("sidebar.connections") }}</span>
         <span class="flex-1 self-stretch" data-tauri-drag-region />
-        <LightTooltip :text="t('sidebar.import')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <span class="inline-flex">
-            <LightDropdown
-              model-value=""
-              :items="importSourceItems"
-              :aria-label="t('sidebar.import')"
-              :trigger-icon="Download"
-              trigger-class="inline-flex h-6 w-5 items-center justify-center rounded-md outline-none hover:bg-muted hover:text-foreground focus-visible:ring-0"
-              trigger-icon-class="h-4 w-4"
-              content-class="w-44"
-              :show-trigger-label="false"
-              :show-chevron="false"
-              :highlight-selected="false"
-              check-position="none"
-              align="end"
-              @update:model-value="(source) => emit('import', source as 'dbx' | 'navicat' | 'dbeaver' | 'datagrip')"
-            />
-          </span>
-        </LightTooltip>
-        <LightTooltip :text="t('sidebar.export')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <Button variant="ghost" size="icon" class="h-5 w-5" @click="emit('export')">
-            <Upload class="h-3 w-3" />
-          </Button>
-        </LightTooltip>
-        <LightTooltip :text="t('sidebar.collapseAll')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <Button variant="ghost" size="icon" class="h-5 w-5" @click="collapseAllTreeNodes">
-            <ChevronsUp class="h-3 w-3" />
-          </Button>
-        </LightTooltip>
-        <LightTooltip :text="t('connectionGroup.createGroup')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <Button variant="ghost" size="icon" class="h-5 w-5" @click="createNewGroup">
-            <FolderPlus class="h-3 w-3" />
-          </Button>
-        </LightTooltip>
-        <LightTooltip :text="t('contextMenu.refreshChildren')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <Button variant="ghost" size="icon" class="h-5 w-5" @click="refreshTree">
-            <RefreshCw class="h-3 w-3" />
-          </Button>
-        </LightTooltip>
-        <LightTooltip :text="t('sidebar.collapse')" side="bottom" :delay="0" :close-delay="0" nowrap>
-          <Button variant="ghost" size="icon" class="h-6 w-6" @click="emit('collapse')">
-            <ChevronsLeft class="h-3.5 w-3.5" />
-          </Button>
-        </LightTooltip>
+        <template v-if="showConnectionMultiSelectToolbar">
+          <span class="mr-1 text-[11px] font-medium text-muted-foreground">{{ selectedConnectionCount }}</span>
+          <LightTooltip :text="t('connectionGroup.createGroup')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="openCreateSelectedGroupDialog">
+              <FolderPlus class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('connectionGroup.moveToGroup')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <span class="inline-flex">
+              <LightDropdown
+                model-value=""
+                :items="moveGroupItems"
+                :aria-label="t('connectionGroup.moveToGroup')"
+                :trigger-icon="FolderInput"
+                trigger-class="inline-flex h-5 w-5 items-center justify-center rounded-md outline-none hover:bg-muted hover:text-foreground focus-visible:ring-0"
+                trigger-icon-class="h-3.5 w-3.5"
+                content-class="w-44"
+                :show-trigger-label="false"
+                :show-chevron="false"
+                :highlight-selected="false"
+                check-position="none"
+                align="end"
+                @update:model-value="moveSelectedConnectionsToGroup"
+              />
+            </span>
+          </LightTooltip>
+          <LightTooltip :text="t('contextMenu.deleteSelectedConnections', { count: selectedConnectionCount })" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5 text-destructive hover:text-destructive" @click="showDeleteSelectedConfirm = true">
+              <Trash2 class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="selectAllLabel" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="toggleAllConnectionsSelected">
+              <component :is="selectAllIcon" class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('connectionGroup.exitMultiSelect')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="clearConnectionMultiSelection">
+              <X class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+        </template>
+        <template v-else>
+          <LightTooltip :text="t('sidebar.import')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <span class="inline-flex">
+              <LightDropdown
+                model-value=""
+                :items="importSourceItems"
+                :aria-label="t('sidebar.import')"
+                :trigger-icon="Download"
+                trigger-class="inline-flex h-6 w-5 items-center justify-center rounded-md outline-none hover:bg-muted hover:text-foreground focus-visible:ring-0"
+                trigger-icon-class="h-4 w-4"
+                content-class="w-44"
+                :show-trigger-label="false"
+                :show-chevron="false"
+                :highlight-selected="false"
+                check-position="none"
+                align="end"
+                @update:model-value="selectImportSource"
+              />
+            </span>
+          </LightTooltip>
+          <LightTooltip :text="t('sidebar.export')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="emit('export')">
+              <Upload class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('sidebar.collapseAll')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="collapseAllTreeNodes">
+              <ChevronsUp class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('connectionGroup.createGroup')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="createNewGroup">
+              <FolderPlus class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('contextMenu.refreshChildren')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-5 w-5" @click="refreshTree">
+              <RefreshCw class="h-3 w-3" />
+            </Button>
+          </LightTooltip>
+          <LightTooltip :text="t('sidebar.collapse')" side="bottom" :delay="0" :close-delay="0" nowrap>
+            <Button variant="ghost" size="icon" class="h-6 w-6" @click="emit('collapse')">
+              <ChevronsLeft class="h-3.5 w-3.5" />
+            </Button>
+          </LightTooltip>
+        </template>
       </div>
       <div class="flex-1 min-h-0">
         <ConnectionTree ref="connectionTreeRef" />
       </div>
     </div>
     <div class="panel-resize-handle panel-resize-handle--right" @mousedown="emit('startResize', $event)" />
+    <Dialog v-model:open="showDeleteSelectedConfirm">
+      <DialogContent class="sm:max-w-[400px]">
+        <DialogHeader>
+          <DialogTitle>{{ t("contextMenu.confirmDeleteTitle") }}</DialogTitle>
+        </DialogHeader>
+        <p class="text-sm text-muted-foreground">
+          {{ t("contextMenu.confirmDeleteSelectedMessage", { count: selectedConnectionCount }) }}
+        </p>
+        <DialogFooter>
+          <Button variant="outline" @click="showDeleteSelectedConfirm = false">{{ t("dangerDialog.cancel") }}</Button>
+          <Button variant="destructive" @click="confirmDeleteSelectedConnections">{{ t("contextMenu.deleteSelectedConnections", { count: selectedConnectionCount }) }}</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+    <Dialog v-model:open="showCreateSelectedGroupDialog">
+      <DialogContent class="sm:max-w-[360px]">
+        <DialogHeader>
+          <DialogTitle>{{ t("connectionGroup.createGroup") }}</DialogTitle>
+        </DialogHeader>
+        <Input v-model="selectedGroupName" :placeholder="t('connectionGroup.groupNamePlaceholder')" @keydown.enter.prevent="confirmCreateSelectedGroup" />
+        <DialogFooter>
+          <Button variant="outline" @click="showCreateSelectedGroupDialog = false">{{ t("dangerDialog.cancel") }}</Button>
+          <Button :disabled="!selectedGroupName.trim()" @click="confirmCreateSelectedGroup">{{ t("connectionGroup.createGroup") }}</Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
   </div>
 </template>
diff --git a/apps/desktop/src/components/sidebar/ConnectionTree.vue b/apps/desktop/src/components/sidebar/ConnectionTree.vue
index 6348fb9ee..59c7f7ac6 100644
--- a/apps/desktop/src/components/sidebar/ConnectionTree.vue
+++ b/apps/desktop/src/components/sidebar/ConnectionTree.vue
@@ -440,6 +440,7 @@ function clearSidebarSelection() {
   // Clicking the blank area of the tree clears the current selection. Row
   // clicks call event.stopPropagation(), so this only fires for blank clicks
   // (issue #681 — selection wasn't cleared in double-click activation mode).
+  store.connectionMultiSelectActive = false;
   store.selectedTreeNodeId = null;
   store.selectedTreeNodeIds = [];
   store.treeSelectionAnchorId = null;
diff --git a/apps/desktop/src/components/sidebar/TreeItem.vue b/apps/desktop/src/components/sidebar/TreeItem.vue
index 7f2c6f040..b87885f40 100644
--- a/apps/desktop/src/components/sidebar/TreeItem.vue
+++ b/apps/desktop/src/components/sidebar/TreeItem.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { ref, computed, nextTick, watch, onMounted, onBeforeUnmount, inject } from "vue";
+import { ref, computed, nextTick, watch, onMounted, onBeforeUnmount, inject, type Component } from "vue";
 import { useSqlHighlighter } from "@/composables/useSqlHighlighter";
 import { useI18n } from "vue-i18n";
 import { translateBackendError } from "@/i18n/backend-errors";
@@ -48,6 +48,7 @@ import {
   ListFilter,
   Package,
   Clipboard,
+  Check,
   UsersRound,
   Lock,
   HardDriveDownload,
@@ -56,8 +57,9 @@ import {
   ListX,
   Info,
   Archive,
+  Square,
 } from "@lucide/vue";
-import CustomContextMenu, { type ContextMenuItem } from "@/components/ui/CustomContextMenu.vue";
+import CustomContextMenu from "@/components/ui/CustomContextMenu.vue";
 import { useConnectionStore } from "@/stores/connectionStore";
 import { useQueryStore } from "@/stores/queryStore";
 import { useSettingsStore } from "@/stores/settingsStore";
@@ -151,6 +153,19 @@ const labelOverflowing = ref(false);
 let labelResizeObserver: ResizeObserver | null = null;
 let labelMeasureFrame = 0;
 
+interface ContextMenuItem {
+  label: string;
+  action?: () => void;
+  disabled?: boolean;
+  separator?: boolean;
+  icon?: Component;
+  iconClass?: string;
+  shortcut?: string;
+  variant?: "default" | "destructive";
+  visible?: boolean;
+  children?: ContextMenuItem[];
+}
+
 function cancelLabelOverflowMeasure() {
   if (!labelMeasureFrame) return;
   window.cancelAnimationFrame(labelMeasureFrame);
@@ -715,12 +730,14 @@ function selectedTreeNodesInVisibleOrder(): TreeNode[] {
 }
 
 function selectSingleTreeNode(node: TreeNode) {
+  connectionStore.connectionMultiSelectActive = false;
   connectionStore.selectedTreeNodeId = node.id;
   connectionStore.selectedTreeNodeIds = [node.id];
   connectionStore.treeSelectionAnchorId = node.id;
 }
 
 function toggleTreeNodeSelection(node: TreeNode) {
+  connectionStore.connectionMultiSelectActive = false;
   const ids = new Set(connectionStore.selectedTreeNodeIds);
   if (ids.has(node.id)) ids.delete(node.id);
   else ids.add(node.id);
@@ -730,6 +747,7 @@ function toggleTreeNodeSelection(node: TreeNode) {
 }
 
 function selectTreeNodeRange(node: TreeNode) {
+  connectionStore.connectionMultiSelectActive = false;
   const visible = visibleTreeNodes();
   const anchorId = connectionStore.treeSelectionAnchorId || connectionStore.selectedTreeNodeId || node.id;
   const currentIndex = sidebarTreeContext ? sidebarTreeContext.getVisibleNodeIndex(node.id) : -1;
@@ -751,6 +769,30 @@ function selectTreeNodeRange(node: TreeNode) {
   connectionStore.selectedTreeNodeId = node.id;
 }
 
+const selectedConnectionIds = computed(() => {
+  const connectionIds = new Set(connectionStore.connections.map((connection) => connection.id));
+  return connectionStore.selectedTreeNodeIds.filter((id) => connectionIds.has(id));
+});
+
+const isConnectionSelectionChecked = computed(() => connectionStore.connectionMultiSelectActive && props.node.type === "connection" && !!props.node.connectionId && selectedConnectionIds.value.includes(props.node.connectionId));
+
+function toggleConnectionMultiSelection(event: MouseEvent) {
+  event.preventDefault();
+  event.stopPropagation();
+  if (props.node.type !== "connection" || !props.node.connectionId) return;
+
+  const next = new Set(connectionStore.connectionMultiSelectActive ? selectedConnectionIds.value : []);
+  if (next.has(props.node.connectionId)) next.delete(props.node.connectionId);
+  else next.add(props.node.connectionId);
+
+  const ids = [...next];
+  connectionStore.selectedTreeNodeIds = ids;
+  connectionStore.selectedTreeNodeId = ids.includes(props.node.connectionId) ? props.node.connectionId : (ids[0] ?? null);
+  connectionStore.treeSelectionAnchorId = props.node.connectionId;
+  connectionStore.connectionMultiSelectActive = ids.length > 0;
+  rowRef.value?.focus({ preventScroll: true });
+}
+
 function onClick(event: MouseEvent) {
   if (suppressNextTableReferenceClick) {
     suppressNextTableReferenceClick = false;
@@ -4529,19 +4571,22 @@ function treeItemMenuItems(): ContextMenuItem[] {
 </script>
 
 <template>
-  <CustomContextMenu :items="treeItemMenuItems()" v-slot="{ onContextMenu }">
-    <div @contextmenu="onTreeItemContextMenu($event, onContextMenu)">
+  <CustomContextMenu :items="treeItemMenuItems()" v-slot="contextMenuSlot">
+    <div @contextmenu="onTreeItemContextMenu($event, contextMenuSlot.onContextMenu)">
       <LightTooltip :text="displayLabel(node)" :disabled="isTooltipDisabled()" side="right" :side-offset="8" :delay="0" :close-delay="0">
         <div
           ref="rowRef"
-          class="group flex items-center gap-1.5 py-1 px-2 cursor-pointer hover:bg-accent relative outline-none"
+          class="group flex items-center gap-1.5 py-1 px-2 cursor-pointer relative outline-none"
           style="contain: layout style"
           :class="[
             rowWidthClass,
             {
+              'group/sidebar-row': true,
               'ring-1 ring-primary/50 bg-primary/5': showDropInside,
               'opacity-50': isDragging,
               'tree-item-connection-tint': connectionColor,
+              'hover:bg-accent': node.type !== 'connection',
+              'hover:bg-secondary/60': node.type === 'connection',
               rounded: !isSelected && !isMultiSelected,
               'tree-item-active rounded-none': connectionColor && (isSelected || isMultiSelected),
               'tree-item-active rounded-md': !connectionColor && (isSelected || isMultiSelected),
@@ -4567,7 +4612,7 @@ function treeItemMenuItems(): ContextMenuItem[] {
             </button>
           </template>
           <span v-else class="w-3.5 h-3.5 shrink-0" />
-          <DatabaseIcon v-if="node.type === 'connection'" :db-type="connectionIconType(node.connectionId)" class="w-3.5 h-3.5 shrink-0" />
+          <DatabaseIcon v-if="node.type === 'connection'" :db-type="connectionIconType(node.connectionId)" class="h-3.5 w-3.5 shrink-0" />
           <Loader2 v-else-if="node.type === 'load-more' && node.isLoading" class="w-3.5 h-3.5 shrink-0 animate-spin text-primary" />
           <component v-else :is="getIconInfo(node)?.icon || Database" class="w-3.5 h-3.5 shrink-0" :class="nodeIconClass" />
           <input
@@ -4599,6 +4644,18 @@ function treeItemMenuItems(): ContextMenuItem[] {
           <Badge v-if="isConnectionReadonly" variant="secondary" class="h-4 px-1.5 text-[10px] gap-0.5"><Lock class="w-2.5 h-2.5" />{{ t("connection.readOnlyBadge") }}</Badge>
           <ConnectionErrorIndicator v-if="node.type === 'connection'" :connection-id="node.connectionId" trigger-class="h-4 w-4" />
           <Pin v-if="isPinned" class="w-3 h-3 shrink-0 text-primary fill-current" aria-hidden="true" />
+          <button
+            v-if="node.type === 'connection'"
+            type="button"
+            class="ml-auto flex h-4 w-4 shrink-0 items-center justify-center rounded text-muted-foreground/55 opacity-0 transition-colors transition-opacity hover:bg-secondary/45 hover:text-foreground focus-visible:opacity-100 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring group-hover/sidebar-row:opacity-100"
+            :class="{ 'opacity-100': isConnectionSelectionChecked || connectionStore.connectionMultiSelectActive }"
+            :aria-label="isConnectionSelectionChecked ? t('connectionGroup.deselectConnection') : t('connectionGroup.selectConnection')"
+            @mousedown.stop
+            @click="toggleConnectionMultiSelection"
+          >
+            <Check v-if="isConnectionSelectionChecked" class="h-3 w-3 text-primary" />
+            <Square v-else class="h-3 w-3 stroke-[1.7]" />
+          </button>
         </div>
         <template v-if="detailTooltip" #content>
           <div class="w-max min-w-40 max-w-[min(28rem,calc(100vw-24px))] rounded-md border border-border bg-popover p-2 text-popover-foreground shadow-lg">
diff --git a/apps/desktop/src/components/ui/CustomContextMenu.vue b/apps/desktop/src/components/ui/CustomContextMenu.vue
index c4b75951e..6cb342a41 100644
--- a/apps/desktop/src/components/ui/CustomContextMenu.vue
+++ b/apps/desktop/src/components/ui/CustomContextMenu.vue
@@ -23,6 +23,10 @@ defineEmits<{
   close: [];
 }>();
 
+defineSlots<{
+  default(props: { onContextMenu: (event: MouseEvent) => void }): any;
+}>();
+
 // ---- module-level singleton state ----
 const openMenus = new Set<() => void>();
 let globalSetup = false;
@@ -261,7 +265,7 @@ onBeforeUnmount(() => {
 </script>
 
 <template>
-  <slot :on-context-menu="onContextMenu" />
+  <slot :onContextMenu="onContextMenu" />
   <!-- Main menu -->
   <Teleport to="body">
     <div v-if="show" ref="menuRef" :style="{ position: 'fixed', left: x + 'px', top: y + 'px', zIndex: 9999 }" class="bg-popover text-popover-foreground min-w-40 rounded-[6px] p-1 overflow-x-hidden overflow-y-auto ring-1 ring-foreground/10 shadow-lg">
diff --git a/apps/desktop/src/components/ui/searchable-select/SearchableSelect.vue b/apps/desktop/src/components/ui/searchable-select/SearchableSelect.vue
index 4fc580527..76a913e43 100644
--- a/apps/desktop/src/components/ui/searchable-select/SearchableSelect.vue
+++ b/apps/desktop/src/components/ui/searchable-select/SearchableSelect.vue
@@ -47,6 +47,12 @@ const emit = defineEmits<{
   "update:open": [value: boolean];
 }>();
 
+defineSlots<{
+  "trigger-label"?(props: { value: string; label: string; loading: boolean }): any;
+  "option-label"?(props: { option: string; label: string }): any;
+  "custom-option-label"?(props: { value: string }): any;
+}>();
+
 const open = ref(false);
 const searchText = ref("");
 const searchInput = ref<InstanceType<typeof Input>>();
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index 751223414..d853a99e6 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -1079,6 +1079,11 @@ export default {
   connectionGroup: {
     createGroup: "New Group",
     groupNamePlaceholder: "Group name",
+    selectConnection: "Select connection",
+    deselectConnection: "Deselect connection",
+    selectAllConnections: "Select all connections",
+    deselectAllConnections: "Deselect all connections",
+    exitMultiSelect: "Exit selection",
     renameGroup: "Rename Group",
     deleteGroup: "Delete Group",
     moveToGroup: "Move to Group",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index f777d2296..1fd464924 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -1050,6 +1050,11 @@ export default withEnglishFallback({
     newGroupDefault: "Nuevo grupo",
     deleteGroupConfirmTitle: "Eliminar grupo",
     deleteGroupConfirmMessage: '¿Eliminar el grupo "{name}"? Las conexiones dentro serán movidas al nivel superior.',
+    selectConnection: "Seleccionar conexión",
+    deselectConnection: "Deseleccionar conexión",
+    selectAllConnections: "Seleccionar todas las conexiones",
+    deselectAllConnections: "Deseleccionar todas las conexiones",
+    exitMultiSelect: "Salir de selección múltiple",
   },
   databaseSearch: {
     title: "Buscar en base de datos",
diff --git a/apps/desktop/src/i18n/locales/it.ts b/apps/desktop/src/i18n/locales/it.ts
index 6334b77ac..98ccf470b 100644
--- a/apps/desktop/src/i18n/locales/it.ts
+++ b/apps/desktop/src/i18n/locales/it.ts
@@ -1048,6 +1048,11 @@ export default withEnglishFallback({
     newGroupDefault: "Nuovo Gruppo",
     deleteGroupConfirmTitle: "Elimina Gruppo",
     deleteGroupConfirmMessage: 'Eliminare il gruppo "{name}"? Le connessioni al suo interno verranno spostate al livello principale.',
+    selectConnection: "Seleziona connessione",
+    deselectConnection: "Deseleziona connessione",
+    selectAllConnections: "Seleziona tutte le connessioni",
+    deselectAllConnections: "Deseleziona tutte le connessioni",
+    exitMultiSelect: "Esci dalla selezione multipla",
   },
   databaseSearch: {
     title: "Cerca nel Database",
diff --git a/apps/desktop/src/i18n/locales/ja.ts b/apps/desktop/src/i18n/locales/ja.ts
index de6a7c67f..e79f90618 100644
--- a/apps/desktop/src/i18n/locales/ja.ts
+++ b/apps/desktop/src/i18n/locales/ja.ts
@@ -1048,6 +1048,11 @@ export default withEnglishFallback({
     newGroupDefault: "新しいグループ",
     deleteGroupConfirmTitle: "グループを削除",
     deleteGroupConfirmMessage: "グループ「{name}」を削除しますか？グループ内の接続はトップレベルに移動されます。",
+    selectConnection: "接続を選択",
+    deselectConnection: "接続の選択を解除",
+    selectAllConnections: "すべての接続を選択",
+    deselectAllConnections: "すべての接続の選択を解除",
+    exitMultiSelect: "複数選択を終了",
   },
   databaseSearch: {
     title: "データベース検索",
diff --git a/apps/desktop/src/i18n/locales/pt-BR.ts b/apps/desktop/src/i18n/locales/pt-BR.ts
index a77bb16ef..cc4f7d41a 100644
--- a/apps/desktop/src/i18n/locales/pt-BR.ts
+++ b/apps/desktop/src/i18n/locales/pt-BR.ts
@@ -1049,6 +1049,11 @@ export default withEnglishFallback({
     newGroupDefault: "Novo Grupo",
     deleteGroupConfirmTitle: "Excluir Grupo",
     deleteGroupConfirmMessage: 'Excluir o grupo "{name}"? As conexões dentro dele serão movidas para o nível superior.',
+    selectConnection: "Selecionar conexão",
+    deselectConnection: "Desmarcar conexão",
+    selectAllConnections: "Selecionar todas as conexões",
+    deselectAllConnections: "Desmarcar todas as conexões",
+    exitMultiSelect: "Sair da seleção múltipla",
   },
   databaseSearch: {
     title: "Pesquisar no Banco de Dados",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index 30466f13b..753fb3232 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -1081,6 +1081,11 @@ export default withEnglishFallback({
   connectionGroup: {
     createGroup: "新建分组",
     groupNamePlaceholder: "分组名称",
+    selectConnection: "选择连接",
+    deselectConnection: "取消选择连接",
+    selectAllConnections: "全选连接",
+    deselectAllConnections: "取消全选连接",
+    exitMultiSelect: "退出多选",
     renameGroup: "重命名分组",
     deleteGroup: "删除分组",
     moveToGroup: "移至分组",
diff --git a/apps/desktop/src/i18n/locales/zh-TW.ts b/apps/desktop/src/i18n/locales/zh-TW.ts
index fffe4d03e..00fb82f09 100644
--- a/apps/desktop/src/i18n/locales/zh-TW.ts
+++ b/apps/desktop/src/i18n/locales/zh-TW.ts
@@ -1049,6 +1049,11 @@ export default withEnglishFallback({
     newGroupDefault: "新群組",
     deleteGroupConfirmTitle: "刪除群組",
     deleteGroupConfirmMessage: "刪除群組「{name}」？其中的連線將移到頂層。",
+    selectConnection: "選擇連接",
+    deselectConnection: "取消選擇連接",
+    selectAllConnections: "全選連接",
+    deselectAllConnections: "取消全選連接",
+    exitMultiSelect: "退出多選",
   },
   databaseSearch: {
     title: "搜尋資料庫",
diff --git a/apps/desktop/src/stores/connectionStore.ts b/apps/desktop/src/stores/connectionStore.ts
index d3ed2393a..15536b55f 100644
--- a/apps/desktop/src/stores/connectionStore.ts
+++ b/apps/desktop/src/stores/connectionStore.ts
@@ -177,6 +177,7 @@ export const useConnectionStore = defineStore("connection", () => {
   const selectedTreeNodeId = ref<string | null>(null);
   const selectedTreeNodeIds = ref<string[]>([]);
   const treeSelectionAnchorId = ref<string | null>(null);
+  const connectionMultiSelectActive = ref(false);
   const treeClipboard = ref<TreeClipboard | null>(null);
 
   watch(activeConnectionId, (id) => {
@@ -3956,6 +3957,7 @@ export const useConnectionStore = defineStore("connection", () => {
     selectedTreeNodeId,
     selectedTreeNodeIds,
     treeSelectionAnchorId,
+    connectionMultiSelectActive,
     treeClipboard,
     treeNodes,
     removeTreeNode,