diff --git a/desktop/src/api/providers.ts b/desktop/src/api/providers.ts
index a99c9734..08292399 100644
--- a/desktop/src/api/providers.ts
+++ b/desktop/src/api/providers.ts
@@ -61,6 +61,10 @@ export const providersApi = {
     return api.post<{ ok: true }>('/api/providers/official')
   },
 
+  reorder(orderedIds: string[]) {
+    return api.put<{ providers: SavedProvider[] }>('/api/providers/reorder', { orderedIds })
+  },
+
   test(id: string, overrides?: { baseUrl?: string; modelId?: string; apiFormat?: string; authStrategy?: string }) {
     return api.post<TestResultResponse>(`/api/providers/${id}/test`, overrides)
   },
diff --git a/desktop/src/i18n/locales/en.ts b/desktop/src/i18n/locales/en.ts
index 38dae10e..3f224c6a 100644
--- a/desktop/src/i18n/locales/en.ts
+++ b/desktop/src/i18n/locales/en.ts
@@ -381,6 +381,7 @@ export const en = {
   'settings.providers.setDefault': 'Set default',
   'settings.providers.test': 'Test',
   'settings.providers.edit': 'Edit',
+  'settings.providers.dragToReorder': 'Drag to reorder',
   'settings.providers.requestFailed': 'Request failed',
   'settings.providers.addTitle': 'Add Provider',
   'settings.providers.editTitle': 'Edit Provider',
diff --git a/desktop/src/i18n/locales/jp.ts b/desktop/src/i18n/locales/jp.ts
index ab73d5c9..61ee9c35 100644
--- a/desktop/src/i18n/locales/jp.ts
+++ b/desktop/src/i18n/locales/jp.ts
@@ -383,6 +383,7 @@ export const jp: Record<TranslationKey, string> = {
   'settings.providers.setDefault': 'デフォルトに設定',
   'settings.providers.test': 'テスト',
   'settings.providers.edit': '編集',
+  'settings.providers.dragToReorder': 'ドラッグして並べ替え',
   'settings.providers.requestFailed': 'リクエストに失敗しました',
   'settings.providers.addTitle': 'プロバイダーを追加',
   'settings.providers.editTitle': 'プロバイダーを編集',
diff --git a/desktop/src/i18n/locales/kr.ts b/desktop/src/i18n/locales/kr.ts
index 096fd5d9..0633078d 100644
--- a/desktop/src/i18n/locales/kr.ts
+++ b/desktop/src/i18n/locales/kr.ts
@@ -383,6 +383,7 @@ export const kr: Record<TranslationKey, string> = {
   'settings.providers.setDefault': '기본값으로 설정',
   'settings.providers.test': '테스트',
   'settings.providers.edit': '편집',
+  'settings.providers.dragToReorder': '드래그하여 순서 변경',
   'settings.providers.requestFailed': '요청에 실패했습니다',
   'settings.providers.addTitle': '공급자 추가',
   'settings.providers.editTitle': '공급자 편집',
diff --git a/desktop/src/i18n/locales/zh-TW.ts b/desktop/src/i18n/locales/zh-TW.ts
index b75a3d22..d30f243f 100644
--- a/desktop/src/i18n/locales/zh-TW.ts
+++ b/desktop/src/i18n/locales/zh-TW.ts
@@ -383,6 +383,7 @@ export const zh: Record<TranslationKey, string> = {
   'settings.providers.setDefault': '設為預設',
   'settings.providers.test': '測試',
   'settings.providers.edit': '編輯',
+  'settings.providers.dragToReorder': '拖曳排序',
   'settings.providers.requestFailed': '請求失敗',
   'settings.providers.addTitle': '新增服務商',
   'settings.providers.editTitle': '編輯服務商',
diff --git a/desktop/src/i18n/locales/zh.ts b/desktop/src/i18n/locales/zh.ts
index ea308130..093182ce 100644
--- a/desktop/src/i18n/locales/zh.ts
+++ b/desktop/src/i18n/locales/zh.ts
@@ -383,6 +383,7 @@ export const zh: Record<TranslationKey, string> = {
   'settings.providers.setDefault': '设为默认',
   'settings.providers.test': '测试',
   'settings.providers.edit': '编辑',
+  'settings.providers.dragToReorder': '拖动排序',
   'settings.providers.requestFailed': '请求失败',
   'settings.providers.addTitle': '添加服务商',
   'settings.providers.editTitle': '编辑服务商',
diff --git a/desktop/src/pages/Settings.tsx b/desktop/src/pages/Settings.tsx
index 36e64a91..01a04f05 100644
--- a/desktop/src/pages/Settings.tsx
+++ b/desktop/src/pages/Settings.tsx
@@ -229,6 +229,7 @@ function ProviderSettings() {
     fetchProviders,
     fetchPresets,
     deleteProvider,
+    reorderProviders,
     activateProvider,
     activateOfficial,
     testProvider,
@@ -240,6 +241,8 @@ function ProviderSettings() {
   const [pendingDeleteProvider, setPendingDeleteProvider] = useState<SavedProvider | null>(null)
   const [isDeletingProvider, setIsDeletingProvider] = useState(false)
   const [testResults, setTestResults] = useState<Record<string, { loading: boolean; result?: ProviderTestResult }>>({})
+  const [draggingId, setDraggingId] = useState<string | null>(null)
+  const [dragOverId, setDragOverId] = useState<string | null>(null)
 
   useEffect(() => {
     void fetchProviders()
@@ -289,6 +292,46 @@ function ProviderSettings() {
     await fetchSettings()
   }
 
+  const handleProviderDragStart = (event: React.DragEvent, id: string) => {
+    setDraggingId(id)
+    event.dataTransfer.effectAllowed = 'move'
+    event.dataTransfer.setData('text/plain', id)
+  }
+
+  const handleProviderDragOver = (event: React.DragEvent, overId: string) => {
+    if (!draggingId || draggingId === overId) return
+    event.preventDefault()
+    event.dataTransfer.dropEffect = 'move'
+    if (dragOverId !== overId) setDragOverId(overId)
+  }
+
+  const clearProviderDragState = () => {
+    setDraggingId(null)
+    setDragOverId(null)
+  }
+
+  const handleProviderDrop = (event: React.DragEvent, targetId: string) => {
+    event.preventDefault()
+    const sourceId = draggingId || event.dataTransfer.getData('text/plain')
+    if (!sourceId || sourceId === targetId) {
+      clearProviderDragState()
+      return
+    }
+
+    const ids = providers.map((p) => p.id)
+    const from = ids.indexOf(sourceId)
+    const to = ids.indexOf(targetId)
+    if (from === -1 || to === -1) {
+      clearProviderDragState()
+      return
+    }
+
+    ids.splice(from, 1)
+    ids.splice(to, 0, sourceId)
+    clearProviderDragState()
+    void reorderProviders(ids)
+  }
+
   const isClaudeOfficialActive = hasLoadedProviders && activeId === null
   const isOpenAIOfficialActive = hasLoadedProviders && activeId === OPENAI_OFFICIAL_PROVIDER_ID
 
@@ -382,12 +425,28 @@ function ProviderSettings() {
             return (
               <div
                 key={provider.id}
-                className={`relative flex items-center gap-4 px-4 py-3.5 rounded-xl border transition-all group ${
+                onDragOver={(e) => handleProviderDragOver(e, provider.id)}
+                onDrop={(e) => handleProviderDrop(e, provider.id)}
+                onDragLeave={() => setDragOverId((cur) => (cur === provider.id ? null : cur))}
+                className={`relative flex items-center gap-3 px-4 py-3.5 rounded-xl border transition-all group ${
                   isActive
                     ? 'border-[var(--color-brand)] bg-[var(--color-surface-container)] shadow-[var(--shadow-focus-ring)]'
                     : 'border-[var(--color-border)] hover:border-[var(--color-border-focus)]'
+                } ${draggingId === provider.id ? 'opacity-50' : ''} ${
+                  dragOverId === provider.id ? 'border-[var(--color-brand)] border-dashed' : ''
                 }`}
               >
+                <span
+                  draggable
+                  onDragStart={(e) => handleProviderDragStart(e, provider.id)}
+                  onDragEnd={clearProviderDragState}
+                  role="button"
+                  aria-label={t('settings.providers.dragToReorder')}
+                  title={t('settings.providers.dragToReorder')}
+                  className="material-symbols-outlined text-[18px] text-[var(--color-text-tertiary)] flex-shrink-0 cursor-grab active:cursor-grabbing opacity-0 group-hover:opacity-100 transition-opacity hover:text-[var(--color-text-secondary)]"
+                >
+                  drag_indicator
+                </span>
                 <span className={`w-2.5 h-2.5 rounded-full flex-shrink-0 ${isActive ? 'bg-[var(--color-success)]' : 'bg-[var(--color-text-tertiary)]'}`} />
                 <div className="flex-1 min-w-0">
                   <div className="flex items-center gap-2">
diff --git a/desktop/src/stores/providerStore.test.ts b/desktop/src/stores/providerStore.test.ts
index 7d16a7c0..32ef9ac1 100644
--- a/desktop/src/stores/providerStore.test.ts
+++ b/desktop/src/stores/providerStore.test.ts
@@ -19,6 +19,7 @@ const {
     create: vi.fn(),
     update: vi.fn(),
     delete: vi.fn(),
+    reorder: vi.fn(),
     activate: vi.fn(),
     activateOfficial: vi.fn(),
     test: vi.fn(),
@@ -181,3 +182,69 @@ describe('providerStore runtime refresh', () => {
     expect(settingsFetchAllMock).toHaveBeenCalled()
   })
 })
+
+describe('providerStore reorderProviders', () => {
+  beforeEach(() => {
+    vi.clearAllMocks()
+    chatStoreState.sessions = {}
+    runtimeStoreState.selections = {}
+    providersApiMock.list.mockResolvedValue({ providers: [], activeId: null })
+  })
+
+  it('optimistically applies the new order before the request resolves', async () => {
+    const a = makeProvider({ id: 'a', name: 'A' })
+    const b = makeProvider({ id: 'b', name: 'B' })
+    const c = makeProvider({ id: 'c', name: 'C' })
+
+    let resolveReorder: (value: { providers: SavedProvider[] }) => void = () => {}
+    providersApiMock.reorder.mockReturnValue(
+      new Promise((resolve) => {
+        resolveReorder = resolve
+      }),
+    )
+
+    const { useProviderStore } = await import('./providerStore')
+    useProviderStore.setState({ providers: [a, b, c], activeId: null })
+
+    const promise = useProviderStore.getState().reorderProviders(['c', 'a', 'b'])
+
+    // Optimistic update is visible immediately, before the API resolves.
+    expect(useProviderStore.getState().providers.map((p) => p.id)).toEqual(['c', 'a', 'b'])
+
+    resolveReorder({ providers: [c, a, b] })
+    await promise
+
+    expect(providersApiMock.reorder).toHaveBeenCalledWith(['c', 'a', 'b'])
+    expect(useProviderStore.getState().providers.map((p) => p.id)).toEqual(['c', 'a', 'b'])
+  })
+
+  it('rolls back to the previous order when the request fails', async () => {
+    const a = makeProvider({ id: 'a', name: 'A' })
+    const b = makeProvider({ id: 'b', name: 'B' })
+    providersApiMock.reorder.mockRejectedValue(new Error('network down'))
+
+    const { useProviderStore } = await import('./providerStore')
+    useProviderStore.setState({ providers: [a, b], activeId: null })
+
+    await useProviderStore.getState().reorderProviders(['b', 'a'])
+
+    // Rolls back to the pre-drag order and surfaces the error.
+    expect(useProviderStore.getState().providers.map((p) => p.id)).toEqual(['a', 'b'])
+    expect(useProviderStore.getState().error).toBe('network down')
+  })
+
+  it('refetches instead of reordering when the id set is stale', async () => {
+    const a = makeProvider({ id: 'a', name: 'A' })
+    const b = makeProvider({ id: 'b', name: 'B' })
+    providersApiMock.list.mockResolvedValue({ providers: [a, b], activeId: null })
+
+    const { useProviderStore } = await import('./providerStore')
+    useProviderStore.setState({ providers: [a, b], activeId: null })
+
+    // Only one id supplied — the list changed under us, so don't persist a bad order.
+    await useProviderStore.getState().reorderProviders(['a'])
+
+    expect(providersApiMock.reorder).not.toHaveBeenCalled()
+    expect(providersApiMock.list).toHaveBeenCalled()
+  })
+})
diff --git a/desktop/src/stores/providerStore.ts b/desktop/src/stores/providerStore.ts
index e0f52833..55afb3f2 100644
--- a/desktop/src/stores/providerStore.ts
+++ b/desktop/src/stores/providerStore.ts
@@ -34,6 +34,7 @@ type ProviderStore = {
   createProvider: (input: CreateProviderInput) => Promise<SavedProvider>
   updateProvider: (id: string, input: UpdateProviderInput) => Promise<SavedProvider>
   deleteProvider: (id: string) => Promise<void>
+  reorderProviders: (orderedIds: string[]) => Promise<void>
   activateProvider: (id: string) => Promise<void>
   activateOfficial: () => Promise<void>
   testProvider: (id: string, overrides?: { baseUrl?: string; modelId?: string; apiFormat?: string; authStrategy?: string }) => Promise<ProviderTestResult>
@@ -145,6 +146,29 @@ export const useProviderStore = create<ProviderStore>((set, get) => ({
     await get().fetchProviders()
   },
 
+  reorderProviders: async (orderedIds) => {
+    const previous = get().providers
+    // Optimistically reorder locally so the drag feels instant…
+    const byId = new Map(previous.map((p) => [p.id, p]))
+    const next = orderedIds
+      .map((id) => byId.get(id))
+      .filter((p): p is SavedProvider => p !== undefined)
+    // Bail out if the id set is stale (e.g. a provider was deleted mid-drag).
+    if (next.length !== previous.length) {
+      await get().fetchProviders()
+      return
+    }
+    set({ providers: next })
+    try {
+      const { providers } = await providersApi.reorder(orderedIds)
+      set({ providers })
+    } catch (err) {
+      // …and roll back to the pre-drag order if persistence fails. `previous`
+      // is the server's last-known truth, so no refetch is needed.
+      set({ providers: previous, error: err instanceof Error ? err.message : String(err) })
+    }
+  },
+
   activateProvider: async (id) => {
     await providersApi.activate(id)
     await get().fetchProviders()
diff --git a/src/server/__tests__/providers.test.ts b/src/server/__tests__/providers.test.ts
index 2354693e..f775c793 100644
--- a/src/server/__tests__/providers.test.ts
+++ b/src/server/__tests__/providers.test.ts
@@ -625,6 +625,81 @@ describe('ProviderService', () => {
     })
   })
 
+  // ─── reorderProviders ────────────────────────────────────────────────────
+
+  describe('reorderProviders', () => {
+    test('should reorder providers to match the given id order and persist it', async () => {
+      const svc = new ProviderService()
+      const a = await svc.addProvider(sampleInput({ name: 'A' }))
+      const b = await svc.addProvider(sampleInput({ name: 'B' }))
+      const c = await svc.addProvider(sampleInput({ name: 'C' }))
+
+      const result = await svc.reorderProviders([c.id, a.id, b.id])
+      expect(result.map((p) => p.name)).toEqual(['C', 'A', 'B'])
+
+      // Persisted order survives a fresh read
+      const { providers } = await svc.listProviders()
+      expect(providers.map((p) => p.name)).toEqual(['C', 'A', 'B'])
+
+      const config = await readProvidersConfig()
+      expect((config.providers as Array<{ name: string }>).map((p) => p.name)).toEqual(['C', 'A', 'B'])
+    })
+
+    test('should not change activeId when reordering', async () => {
+      const svc = new ProviderService()
+      const a = await svc.addProvider(sampleInput({ name: 'A' }))
+      const b = await svc.addProvider(sampleInput({ name: 'B' }))
+      await svc.activateProvider(a.id)
+
+      await svc.reorderProviders([b.id, a.id])
+
+      const { activeId } = await svc.listProviders()
+      expect(activeId).toBe(a.id)
+    })
+
+    test('should throw 400 when orderedIds is missing a provider', async () => {
+      const svc = new ProviderService()
+      const a = await svc.addProvider(sampleInput({ name: 'A' }))
+      await svc.addProvider(sampleInput({ name: 'B' }))
+
+      try {
+        await svc.reorderProviders([a.id])
+        expect(true).toBe(false)
+      } catch (err: unknown) {
+        const apiErr = err as { statusCode: number }
+        expect(apiErr.statusCode).toBe(400)
+      }
+    })
+
+    test('should throw 400 when orderedIds contains an unknown id', async () => {
+      const svc = new ProviderService()
+      const a = await svc.addProvider(sampleInput({ name: 'A' }))
+      const b = await svc.addProvider(sampleInput({ name: 'B' }))
+
+      try {
+        await svc.reorderProviders([a.id, b.id, 'ghost-id'])
+        expect(true).toBe(false)
+      } catch (err: unknown) {
+        const apiErr = err as { statusCode: number }
+        expect(apiErr.statusCode).toBe(400)
+      }
+    })
+
+    test('should throw 400 when orderedIds contains duplicates', async () => {
+      const svc = new ProviderService()
+      const a = await svc.addProvider(sampleInput({ name: 'A' }))
+      await svc.addProvider(sampleInput({ name: 'B' }))
+
+      try {
+        await svc.reorderProviders([a.id, a.id])
+        expect(true).toBe(false)
+      } catch (err: unknown) {
+        const apiErr = err as { statusCode: number }
+        expect(apiErr.statusCode).toBe(400)
+      }
+    })
+  })
+
   // ─── activateProvider ────────────────────────────────────────────────────
 
   describe('activateProvider', () => {
@@ -1518,6 +1593,54 @@ describe('Providers API', () => {
     expect(res.status).toBe(400)
   })
 
+  // ─── PUT /api/providers/reorder ──────────────────────────────────────────
+
+  test('PUT /api/providers/reorder should reorder providers', async () => {
+    const svc = new ProviderService()
+    const a = await svc.addProvider(sampleInput({ name: 'A' }))
+    const b = await svc.addProvider(sampleInput({ name: 'B' }))
+
+    const { req, url, segments } = makeRequest('PUT', '/api/providers/reorder', {
+      orderedIds: [b.id, a.id],
+    })
+    const res = await handleProvidersApi(req, url, segments)
+
+    expect(res.status).toBe(200)
+    const body = (await res.json()) as { providers: { name: string }[] }
+    expect(body.providers.map((p) => p.name)).toEqual(['B', 'A'])
+  })
+
+  test('PUT /api/providers/reorder should return 400 for a non-permutation', async () => {
+    const svc = new ProviderService()
+    const a = await svc.addProvider(sampleInput({ name: 'A' }))
+    await svc.addProvider(sampleInput({ name: 'B' }))
+
+    const { req, url, segments } = makeRequest('PUT', '/api/providers/reorder', {
+      orderedIds: [a.id], // missing B
+    })
+    const res = await handleProvidersApi(req, url, segments)
+
+    expect(res.status).toBe(400)
+  })
+
+  test('PUT /api/providers/reorder should return 400 for empty orderedIds', async () => {
+    const { req, url, segments } = makeRequest('PUT', '/api/providers/reorder', {
+      orderedIds: [],
+    })
+    const res = await handleProvidersApi(req, url, segments)
+
+    expect(res.status).toBe(400)
+  })
+
+  test('POST /api/providers/reorder should be method-not-allowed', async () => {
+    const { req, url, segments } = makeRequest('POST', '/api/providers/reorder', {
+      orderedIds: [],
+    })
+    const res = await handleProvidersApi(req, url, segments)
+
+    expect(res.status).toBe(405)
+  })
+
   test('POST /api/providers should return 400 for invalid auto compact window', async () => {
     const { req, url, segments } = makeRequest('POST', '/api/providers', {
       presetId: 'custom',
diff --git a/src/server/api/providers.ts b/src/server/api/providers.ts
index 7998dc80..d046c0f1 100644
--- a/src/server/api/providers.ts
+++ b/src/server/api/providers.ts
@@ -22,6 +22,7 @@ import {
   CreateProviderSchema,
   UpdateProviderSchema,
   TestProviderSchema,
+  ReorderProvidersSchema,
 } from '../types/provider.js'
 import { ApiError, errorResponse } from '../middleware/errorHandler.js'
 import { diagnosticsService } from '../services/diagnosticsService.js'
@@ -72,6 +73,12 @@ export async function handleProvidersApi(
       return Response.json({ ok: true })
     }
 
+    // PUT /api/providers/reorder
+    if (id === 'reorder') {
+      if (req.method !== 'PUT') throw methodNotAllowed(req.method)
+      return await handleReorder(req)
+    }
+
     // /api/providers (no ID)
     if (!id) {
       if (req.method === 'GET') {
@@ -161,6 +168,18 @@ async function handleUpdate(req: Request, id: string): Promise<Response> {
   }
 }
 
+async function handleReorder(req: Request): Promise<Response> {
+  const body = await parseJsonBody(req)
+  try {
+    const input = ReorderProvidersSchema.parse(body)
+    const providers = await providerService.reorderProviders(input.orderedIds)
+    return Response.json({ providers })
+  } catch (err) {
+    if (err instanceof z.ZodError) throw ApiError.badRequest(err.issues.map((i) => i.message).join('; '))
+    throw err
+  }
+}
+
 async function handleTestUnsaved(req: Request): Promise<Response> {
   const body = await parseJsonBody(req)
   try {
diff --git a/src/server/services/providerService.ts b/src/server/services/providerService.ts
index 7a7fa48d..8f0aa773 100644
--- a/src/server/services/providerService.ts
+++ b/src/server/services/providerService.ts
@@ -213,6 +213,36 @@ export class ProviderService {
     await this.writeIndex(index)
   }
 
+  /**
+   * Reorder saved providers to match the given id order.
+   *
+   * The display order is simply the array order in providers.json, so reordering
+   * persists by rewriting the array — no separate `order` field is needed.
+   * `orderedIds` must be a permutation of the existing provider ids (same members,
+   * no duplicates, none missing); otherwise the request is rejected so a stale
+   * client can't silently drop or duplicate a provider.
+   */
+  async reorderProviders(orderedIds: string[]): Promise<SavedProvider[]> {
+    const index = await this.readIndex()
+
+    const currentIds = index.providers.map((p) => p.id)
+    const orderedSet = new Set(orderedIds)
+    const isPermutation =
+      orderedIds.length === currentIds.length &&
+      orderedSet.size === orderedIds.length &&
+      currentIds.every((id) => orderedSet.has(id))
+
+    if (!isPermutation) {
+      throw ApiError.badRequest('orderedIds must be a permutation of existing provider ids')
+    }
+
+    const byId = new Map(index.providers.map((p) => [p.id, p]))
+    index.providers = orderedIds.map((id) => byId.get(id) as SavedProvider)
+    await this.writeIndex(index)
+
+    return index.providers
+  }
+
   // --- Activation ---
 
   async activateProvider(id: string): Promise<void> {
diff --git a/src/server/types/provider.ts b/src/server/types/provider.ts
index 3ddf303f..97579298 100644
--- a/src/server/types/provider.ts
+++ b/src/server/types/provider.ts
@@ -98,6 +98,11 @@ export const TestProviderSchema = z.object({
   apiFormat: ApiFormatSchema.default('anthropic'),
 })
 
+export const ReorderProvidersSchema = z.object({
+  // A permutation of the existing saved provider ids, in the desired display order.
+  orderedIds: z.array(z.string().min(1)).min(1),
+})
+
 // TypeScript types
 export type ModelMapping = z.infer<typeof ModelMappingSchema>
 export type SavedProvider = z.infer<typeof SavedProviderSchema>
@@ -105,6 +110,7 @@ export type ProvidersIndex = z.infer<typeof ProvidersIndexSchema>
 export type CreateProviderInput = z.infer<typeof CreateProviderSchema>
 export type UpdateProviderInput = z.infer<typeof UpdateProviderSchema>
 export type TestProviderInput = z.infer<typeof TestProviderSchema>
+export type ReorderProvidersInput = z.infer<typeof ReorderProvidersSchema>
 
 export interface ProviderTestStepResult {
   success: boolean