diff --git a/apps/desktop/src/components/editor/EditorSettingsDialog.vue b/apps/desktop/src/components/editor/EditorSettingsDialog.vue
index b80edac80..8237c7378 100644
--- a/apps/desktop/src/components/editor/EditorSettingsDialog.vue
+++ b/apps/desktop/src/components/editor/EditorSettingsDialog.vue
@@ -32,6 +32,7 @@ import {
   normalizeShortcutSettings,
   type ShortcutActionId,
 } from "@/lib/shortcutRegistry";
+import { normalizeSidebarHiddenTablePrefixes } from "@/lib/sidebarTableNameDisplay";
 import AiProviderLogo from "@/components/icons/AiProviderLogo.vue";
 
 const { t } = useI18n();
@@ -57,6 +58,7 @@ const editAppLayout = ref(settingsStore.editorSettings.appLayout);
 const editRedisScanPageSize = ref(settingsStore.editorSettings.redisScanPageSize);
 const editShortcuts = ref(normalizeShortcutSettings(settingsStore.editorSettings.shortcuts));
 const editSidebarActivation = ref(settingsStore.editorSettings.sidebarActivation);
+const editSidebarHiddenTablePrefixes = ref(settingsStore.editorSettings.sidebarHiddenTablePrefixes.join("\n"));
 const redisScanPageSizeOptions = [200, 1000, 5000, 10000];
 const systemFonts = ref<string[]>([]);
 const systemFontsLoading = ref(false);
@@ -118,6 +120,7 @@ watch(
       editRedisScanPageSize.value = settingsStore.editorSettings.redisScanPageSize;
       editShortcuts.value = normalizeShortcutSettings(settingsStore.editorSettings.shortcuts);
       editSidebarActivation.value = settingsStore.editorSettings.sidebarActivation;
+      editSidebarHiddenTablePrefixes.value = settingsStore.editorSettings.sidebarHiddenTablePrefixes.join("\n");
       void loadSystemFontOptions();
     }
   },
@@ -141,7 +144,9 @@ function hasChanges(): boolean {
     editAppLayout.value !== settingsStore.editorSettings.appLayout ||
     editRedisScanPageSize.value !== settingsStore.editorSettings.redisScanPageSize ||
     JSON.stringify(editShortcuts.value) !== JSON.stringify(settingsStore.editorSettings.shortcuts) ||
-    editSidebarActivation.value !== settingsStore.editorSettings.sidebarActivation
+    editSidebarActivation.value !== settingsStore.editorSettings.sidebarActivation ||
+    JSON.stringify(normalizeSidebarHiddenTablePrefixes(editSidebarHiddenTablePrefixes.value)) !==
+      JSON.stringify(settingsStore.editorSettings.sidebarHiddenTablePrefixes)
   );
 }
 
@@ -157,6 +162,7 @@ function applySettings() {
     redisScanPageSize: editRedisScanPageSize.value,
     shortcuts: editShortcuts.value,
     sidebarActivation: editSidebarActivation.value,
+    sidebarHiddenTablePrefixes: normalizeSidebarHiddenTablePrefixes(editSidebarHiddenTablePrefixes.value),
   });
   emit("update:open", false);
 }
@@ -171,6 +177,7 @@ function resetDefaults() {
   editRedisScanPageSize.value = DEFAULT_EDITOR_SETTINGS.redisScanPageSize;
   editShortcuts.value = normalizeShortcutSettings(DEFAULT_EDITOR_SETTINGS.shortcuts);
   editSidebarActivation.value = DEFAULT_EDITOR_SETTINGS.sidebarActivation;
+  editSidebarHiddenTablePrefixes.value = DEFAULT_EDITOR_SETTINGS.sidebarHiddenTablePrefixes.join("\n");
 }
 
 function onExecuteModeChange(v: any) {
@@ -835,6 +842,18 @@ watch(
                   </Button>
                 </div>
               </div>
+              <div class="space-y-2">
+                <Label for="sidebar-hidden-table-prefixes">{{ t("settings.sidebarHiddenTablePrefixes") }}</Label>
+                <textarea
+                  id="sidebar-hidden-table-prefixes"
+                  v-model="editSidebarHiddenTablePrefixes"
+                  class="min-h-24 w-full rounded-md border border-input bg-background px-3 py-2 text-sm outline-none transition-colors placeholder:text-muted-foreground focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2"
+                  :placeholder="t('settings.sidebarHiddenTablePrefixesPlaceholder')"
+                />
+                <p class="text-xs text-muted-foreground">
+                  {{ t("settings.sidebarHiddenTablePrefixesDescription") }}
+                </p>
+              </div>
             </section>
 
             <section v-else-if="activeSettingsTab === 'redis'" class="flex flex-col gap-5 py-2">
diff --git a/apps/desktop/src/components/sidebar/TreeItem.vue b/apps/desktop/src/components/sidebar/TreeItem.vue
index 1d32368f5..80a26c3d6 100644
--- a/apps/desktop/src/components/sidebar/TreeItem.vue
+++ b/apps/desktop/src/components/sidebar/TreeItem.vue
@@ -107,6 +107,7 @@ import { buildViewDdl } from "@/lib/viewDdl";
 import { hexToRgba } from "@/lib/color";
 import { focusSidebarRenameInput, shouldPreventRenameCloseAutoFocus } from "@/lib/sidebarRenameFocus";
 import { hasTreeNodeDatabaseContext } from "@/lib/treeNodeContext";
+import { sidebarDisplayTableName } from "@/lib/sidebarTableNameDisplay";
 import DangerConfirmDialog from "@/components/editor/DangerConfirmDialog.vue";
 import { isTauriRuntime } from "@/lib/tauriRuntime";
 import DatabaseIcon from "@/components/icons/DatabaseIcon.vue";
@@ -256,6 +257,17 @@ function displayLabel(node: TreeNode): string {
   return isGroupLabel(node) ? t(node.label) : node.label;
 }
 
+function visibleLabel(node: TreeNode): string {
+  if (node.type === "table" || node.type === "view" || node.type === "mongo-collection") {
+    return sidebarDisplayTableName(node.label, settingsStore.editorSettings.sidebarHiddenTablePrefixes);
+  }
+  return displayLabel(node);
+}
+
+function isTooltipDisabled(node: TreeNode): boolean {
+  return !isTruncated.value && visibleLabel(node) === displayLabel(node);
+}
+
 async function toggle() {
   const node = props.node;
   if (node.isLoading) return;
@@ -1797,9 +1809,9 @@ const isDragging = computed(() => dragState.active && dragState.draggedId === pr
             @keydown.escape.prevent="isRenamingGroup = false"
             @click.stop
           />
-          <Tooltip v-else :disabled="!isTruncated">
+          <Tooltip v-else :disabled="isTooltipDisabled(node)">
             <TooltipTrigger as-child>
-              <span ref="labelRef" class="min-w-0 flex-1 truncate">{{ displayLabel(node) }}</span>
+              <span ref="labelRef" class="min-w-0 flex-1 truncate">{{ visibleLabel(node) }}</span>
             </TooltipTrigger>
             <TooltipContent side="right" :side-offset="8">{{ displayLabel(node) }}</TooltipContent>
           </Tooltip>
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index b20d70c1e..c81a29545 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -1198,6 +1198,10 @@ export default {
     sidebarActivationSingleDescription: "Open actionable sidebar items with one click.",
     sidebarActivationDouble: "Double click",
     sidebarActivationDoubleDescription: "Single click selects rows; double click opens items.",
+    sidebarHiddenTablePrefixes: "Hidden table name prefixes",
+    sidebarHiddenTablePrefixesDescription:
+      "One prefix per line. Only sidebar table, view, and collection labels are shortened; tooltips and actions still use the full name.",
+    sidebarHiddenTablePrefixesPlaceholder: "Example:\nODS_\nT8Y2_LONG_",
     apply: "Apply",
     reset: "Reset",
     resetDefaults: "Reset Defaults",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index 794eccf49..35becd3e1 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -1096,6 +1096,10 @@ export default {
     sidebarActivationSingleDescription: "Abrir elementos accionables de la barra lateral con un clic.",
     sidebarActivationDouble: "Doble clic",
     sidebarActivationDoubleDescription: "Un clic selecciona la fila; doble clic abre elementos.",
+    sidebarHiddenTablePrefixes: "Prefijos ocultos de tablas",
+    sidebarHiddenTablePrefixesDescription:
+      "Un prefijo por linea. Solo acorta etiquetas de tablas, vistas y colecciones en la barra lateral; las acciones y ayudas usan el nombre completo.",
+    sidebarHiddenTablePrefixesPlaceholder: "Ejemplo:\nODS_\nT8Y2_LONG_",
     apply: "Aplicar",
     reset: "Restablecer",
     resetDefaults: "Restablecer valores por defecto",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index 71a437708..b100cff00 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -1176,6 +1176,10 @@ export default {
     sidebarActivationSingleDescription: "单击即可打开侧边栏中的可操作项目。",
     sidebarActivationDouble: "双击打开",
     sidebarActivationDoubleDescription: "单击只选中高亮，双击打开项目。",
+    sidebarHiddenTablePrefixes: "隐藏表名前缀",
+    sidebarHiddenTablePrefixesDescription:
+      "每行一个前缀，仅影响侧边栏表、视图和集合的显示名称，悬浮提示和实际操作仍使用完整名称。",
+    sidebarHiddenTablePrefixesPlaceholder: "例如：\nODS_\nT8Y2_LONG_",
     apply: "应用",
     reset: "重置",
     resetDefaults: "恢复默认",
diff --git a/apps/desktop/src/lib/sidebarTableNameDisplay.ts b/apps/desktop/src/lib/sidebarTableNameDisplay.ts
new file mode 100644
index 000000000..266187f84
--- /dev/null
+++ b/apps/desktop/src/lib/sidebarTableNameDisplay.ts
@@ -0,0 +1,26 @@
+export function normalizeSidebarHiddenTablePrefixes(value: unknown): string[] {
+  const rawPrefixes =
+    typeof value === "string"
+      ? value.split(/\r?\n/)
+      : Array.isArray(value)
+        ? value.filter((item) => typeof item === "string")
+        : [];
+  const seen = new Set<string>();
+  const prefixes: string[] = [];
+
+  for (const rawPrefix of rawPrefixes) {
+    const prefix = rawPrefix.trim();
+    if (!prefix || seen.has(prefix)) continue;
+    seen.add(prefix);
+    prefixes.push(prefix);
+  }
+
+  return prefixes.sort((a, b) => b.length - a.length);
+}
+
+export function sidebarDisplayTableName(name: string, prefixes: readonly string[]): string {
+  const prefix = [...prefixes]
+    .sort((a, b) => b.length - a.length)
+    .find((item) => name.startsWith(item) && name.length > item.length);
+  return prefix ? `...${name.slice(prefix.length)}` : name;
+}
diff --git a/apps/desktop/src/stores/settingsStore.ts b/apps/desktop/src/stores/settingsStore.ts
index adc3923b4..a9ff76b32 100644
--- a/apps/desktop/src/stores/settingsStore.ts
+++ b/apps/desktop/src/stores/settingsStore.ts
@@ -9,6 +9,7 @@ import {
 } from "@/lib/columnFormatter";
 import { normalizeShortcutSettings, type ShortcutSettings } from "@/lib/shortcutRegistry";
 import { normalizeResultPageSize } from "@/lib/paginationPageSize";
+import { normalizeSidebarHiddenTablePrefixes } from "@/lib/sidebarTableNameDisplay";
 import type { SidebarActivation } from "@/lib/treeNodeClick";
 
 export type AiProvider =
@@ -170,6 +171,7 @@ export interface EditorSettings {
   mongoViewMode: "document" | "table";
   shortcuts: ShortcutSettings;
   sidebarActivation: SidebarActivation;
+  sidebarHiddenTablePrefixes: string[];
   columnFormatters: Record<string, ColumnFormatterConfig>;
   customColumnFormatters: Record<string, CustomColumnFormatterConfig>;
 }
@@ -209,6 +211,7 @@ export const DEFAULT_EDITOR_SETTINGS: EditorSettings = {
   mongoViewMode: "document",
   shortcuts: normalizeShortcutSettings(),
   sidebarActivation: "single",
+  sidebarHiddenTablePrefixes: [],
   columnFormatters: {},
   customColumnFormatters: {},
 };
@@ -253,6 +256,7 @@ export function normalizeEditorSettings(settings: Partial<EditorSettings>): Edit
       settings.sidebarActivation === "single" || settings.sidebarActivation === "double"
         ? settings.sidebarActivation
         : DEFAULT_EDITOR_SETTINGS.sidebarActivation,
+    sidebarHiddenTablePrefixes: normalizeSidebarHiddenTablePrefixes(settings.sidebarHiddenTablePrefixes),
     columnFormatters: normalizeColumnFormatters(settings.columnFormatters),
     customColumnFormatters: normalizeCustomColumnFormatters(settings.customColumnFormatters),
   };
@@ -334,6 +338,9 @@ export const useSettingsStore = defineStore("settings", () => {
     const normalizedPartial = {
       ...partial,
       ...(partial.pageSize !== undefined ? { pageSize: normalizeResultPageSize(partial.pageSize) } : {}),
+      ...(partial.sidebarHiddenTablePrefixes !== undefined
+        ? { sidebarHiddenTablePrefixes: normalizeSidebarHiddenTablePrefixes(partial.sidebarHiddenTablePrefixes) }
+        : {}),
     };
     Object.assign(editorSettings.value, normalizedPartial);
     saveEditorSettings(editorSettings.value);
diff --git a/packages/app-tests/settingsDialogLayout.test.ts b/packages/app-tests/settingsDialogLayout.test.ts
index f0546a7c9..0f435e170 100644
--- a/packages/app-tests/settingsDialogLayout.test.ts
+++ b/packages/app-tests/settingsDialogLayout.test.ts
@@ -46,6 +46,8 @@ test("settings dialog exposes sidebar activation in navigation settings", () =>
   assert.match(source, /value: "navigation"/);
   assert.match(source, /activeSettingsTab === ['"]navigation['"]/);
   assert.match(source, /settings\.sidebarActivation/);
+  assert.match(source, /settings\.sidebarHiddenTablePrefixes/);
+  assert.match(source, /editSidebarHiddenTablePrefixes/);
 });
 
 test("AI settings can browse provider model names while keeping manual input", () => {
diff --git a/packages/app-tests/settingsStore.test.ts b/packages/app-tests/settingsStore.test.ts
index 32ae8027c..022417d8b 100644
--- a/packages/app-tests/settingsStore.test.ts
+++ b/packages/app-tests/settingsStore.test.ts
@@ -51,6 +51,15 @@ test("keeps saved sidebar activation", () => {
   assert.equal(normalizeEditorSettings({ sidebarActivation: "invalid" } as any).sidebarActivation, "single");
 });
 
+test("normalizes saved sidebar hidden table prefixes", () => {
+  assert.deepEqual(DEFAULT_EDITOR_SETTINGS.sidebarHiddenTablePrefixes, []);
+  assert.deepEqual(
+    normalizeEditorSettings({ sidebarHiddenTablePrefixes: [" app_", "app_", "", "ods."] } as any)
+      .sidebarHiddenTablePrefixes,
+    ["app_", "ods."],
+  );
+});
+
 test("defaults column formatters to an empty record", () => {
   assert.deepEqual(DEFAULT_EDITOR_SETTINGS.columnFormatters, {});
   assert.deepEqual(normalizeEditorSettings({}).columnFormatters, {});
diff --git a/packages/app-tests/sidebarTableNameDisplay.test.ts b/packages/app-tests/sidebarTableNameDisplay.test.ts
new file mode 100644
index 000000000..5f0b76978
--- /dev/null
+++ b/packages/app-tests/sidebarTableNameDisplay.test.ts
@@ -0,0 +1,24 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import {
+  normalizeSidebarHiddenTablePrefixes,
+  sidebarDisplayTableName,
+} from "../../apps/desktop/src/lib/sidebarTableNameDisplay.ts";
+
+test("normalizes sidebar hidden table prefixes", () => {
+  assert.deepEqual(normalizeSidebarHiddenTablePrefixes([" app_", "app_", "", "ods."]), ["app_", "ods."]);
+  assert.deepEqual(normalizeSidebarHiddenTablePrefixes("app_\nods.\n app_ "), ["app_", "ods."]);
+  assert.deepEqual(normalizeSidebarHiddenTablePrefixes(null), []);
+});
+
+test("hides a configured table prefix from the sidebar label", () => {
+  assert.equal(sidebarDisplayTableName("t8y2_long_customer_order", ["t8y2_long_"]), "...customer_order");
+});
+
+test("uses the longest matching sidebar table prefix", () => {
+  assert.equal(sidebarDisplayTableName("app_sales_orders", ["app_", "app_sales_"]), "...orders");
+});
+
+test("keeps the full name when hiding would leave an empty label", () => {
+  assert.equal(sidebarDisplayTableName("app_", ["app_"]), "app_");
+});
diff --git a/packages/app-tests/sidebarTableNameDisplaySource.test.ts b/packages/app-tests/sidebarTableNameDisplaySource.test.ts
new file mode 100644
index 000000000..ce36d9537
--- /dev/null
+++ b/packages/app-tests/sidebarTableNameDisplaySource.test.ts
@@ -0,0 +1,13 @@
+import { readFileSync } from "node:fs";
+import { strict as assert } from "node:assert";
+import test from "node:test";
+
+const source = readFileSync("apps/desktop/src/components/sidebar/TreeItem.vue", "utf8");
+
+test("sidebar table prefix hiding is display-only", () => {
+  assert.match(source, /sidebarDisplayTableName/);
+  assert.match(source, /sidebarHiddenTablePrefixes/);
+  assert.match(source, /node\.type === "table" \|\| node\.type === "view" \|\| node\.type === "mongo-collection"/);
+  assert.match(source, /{{ visibleLabel\(node\) }}/);
+  assert.match(source, /{{ displayLabel\(node\) }}/);
+});