diff --git a/.changeset/icy-cities-speak.md b/.changeset/icy-cities-speak.md
new file mode 100644
index 00000000000..b02c932197d
--- /dev/null
+++ b/.changeset/icy-cities-speak.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/react-query': minor
+---
+
+feat(react-query): backport mutationOptions in v4
diff --git a/packages/react-query/src/__tests__/mutationOptions.test.tsx b/packages/react-query/src/__tests__/mutationOptions.test.tsx
new file mode 100644
index 00000000000..1a1af7c97f7
--- /dev/null
+++ b/packages/react-query/src/__tests__/mutationOptions.test.tsx
@@ -0,0 +1,140 @@
+import * as React from 'react'
+import { QueryClient } from '@tanstack/query-core'
+import { fireEvent, waitFor } from '@testing-library/react'
+import { mutationOptions } from '../mutationOptions'
+import { useIsMutating, useMutation } from '..'
+import { renderWithClient, sleep } from './utils'
+import type { UseMutationOptions } from '../types'
+
+describe('mutationOptions', () => {
+  it('should return the object received as a parameter without any modification (with mutationKey)', () => {
+    const object: UseMutationOptions = {
+      mutationKey: ['key'],
+      mutationFn: () => Promise.resolve(5),
+    } as const
+
+    expect(mutationOptions(object)).toBe(object)
+  })
+
+  it('should return the object received as a parameter without any modification (without mutationKey)', () => {
+    const object: UseMutationOptions = {
+      mutationFn: () => Promise.resolve(5),
+    } as const
+
+    expect(mutationOptions(object)).toBe(object)
+  })
+
+  it('should work with useMutation (with mutationKey)', async () => {
+    const queryClient = new QueryClient()
+    const mutationOpts = mutationOptions({
+      mutationKey: ['key'],
+      mutationFn: () => sleep(10).then(() => 'data'),
+    })
+
+    function Page() {
+      const mutation = useMutation(mutationOpts)
+
+      return (
+        <div>
+          <button onClick={() => mutation.mutate()}>mutate</button>
+          <span>{mutation.data ?? 'empty'}</span>
+        </div>
+      )
+    }
+
+    const rendered = renderWithClient(queryClient, <Page />)
+
+    expect(rendered.getByText('empty')).toBeTruthy()
+    fireEvent.click(rendered.getByRole('button', { name: /mutate/i }))
+    await waitFor(() => rendered.getByText('data'))
+  })
+
+  it('should work with useMutation (without mutationKey)', async () => {
+    const queryClient = new QueryClient()
+    const mutationOpts = mutationOptions({
+      mutationFn: () => sleep(10).then(() => 'data'),
+    })
+
+    function Page() {
+      const mutation = useMutation(mutationOpts)
+
+      return (
+        <div>
+          <button onClick={() => mutation.mutate()}>mutate</button>
+          <span>{mutation.data ?? 'empty'}</span>
+        </div>
+      )
+    }
+
+    const rendered = renderWithClient(queryClient, <Page />)
+
+    expect(rendered.getByText('empty')).toBeTruthy()
+    fireEvent.click(rendered.getByRole('button', { name: /mutate/i }))
+    await waitFor(() => rendered.getByText('data'))
+  })
+
+  it('should work with useIsMutating filtering by mutationKey', async () => {
+    const queryClient = new QueryClient()
+    const mutationOpts1 = mutationOptions({
+      mutationKey: ['key1'],
+      mutationFn: () => sleep(50).then(() => 'data1'),
+    })
+    const mutationOpts2 = mutationOptions({
+      mutationKey: ['key2'],
+      mutationFn: () => sleep(50).then(() => 'data2'),
+    })
+
+    function Page() {
+      const isMutating = useIsMutating({
+        mutationKey: mutationOpts1.mutationKey,
+      })
+      const { mutate: mutate1 } = useMutation(mutationOpts1)
+      const { mutate: mutate2 } = useMutation(mutationOpts2)
+
+      return (
+        <div>
+          <span>isMutating: {isMutating}</span>
+          <button onClick={() => mutate1()}>mutate1</button>
+          <button onClick={() => mutate2()}>mutate2</button>
+        </div>
+      )
+    }
+
+    const rendered = renderWithClient(queryClient, <Page />)
+
+    rendered.getByText('isMutating: 0')
+    fireEvent.click(rendered.getByRole('button', { name: /mutate1/i }))
+    fireEvent.click(rendered.getByRole('button', { name: /mutate2/i }))
+    await waitFor(() => rendered.getByText('isMutating: 1'))
+    await waitFor(() => rendered.getByText('isMutating: 0'))
+  })
+
+  it('should work with queryClient.isMutating', async () => {
+    const queryClient = new QueryClient()
+    const mutationOpts = mutationOptions({
+      mutationKey: ['mutation'],
+      mutationFn: () => sleep(10).then(() => 'data'),
+    })
+
+    function Page() {
+      const isMutating = queryClient.isMutating({
+        mutationKey: mutationOpts.mutationKey,
+      })
+      const { mutate } = useMutation(mutationOpts)
+
+      return (
+        <div>
+          <span>isMutating: {isMutating}</span>
+          <button onClick={() => mutate()}>mutate</button>
+        </div>
+      )
+    }
+
+    const rendered = renderWithClient(queryClient, <Page />)
+
+    rendered.getByText('isMutating: 0')
+    fireEvent.click(rendered.getByRole('button', { name: /mutate/i }))
+    await waitFor(() => rendered.getByText('isMutating: 1'))
+    await waitFor(() => rendered.getByText('isMutating: 0'))
+  })
+})
diff --git a/packages/react-query/src/__tests__/mutationOptions.types.test.tsx b/packages/react-query/src/__tests__/mutationOptions.types.test.tsx
new file mode 100644
index 00000000000..0cf877cbb8d
--- /dev/null
+++ b/packages/react-query/src/__tests__/mutationOptions.types.test.tsx
@@ -0,0 +1,438 @@
+import { expectTypeOf } from 'expect-type'
+import { QueryClient } from '@tanstack/query-core'
+import {
+  type UseMutationOptions,
+  type UseMutationResult,
+  mutationOptions,
+  useIsMutating,
+  useMutation,
+  useQueryClient,
+} from '..'
+import { doNotExecute } from './utils'
+import type { MutationKey, OmitKeyof, WithRequired } from '@tanstack/query-core'
+
+const mutationKey = ['key'] as const
+const mutationFn = (_input: { id: string }) =>
+  Promise.resolve({ field: 'success' })
+
+describe('mutationOptions', () => {
+  it('should not allow excess properties', () => {
+    doNotExecute(() => {
+      // @ts-expect-error this is a good error, because onMutates does not exist!
+      mutationOptions({
+        mutationFn: () => Promise.resolve(5),
+        mutationKey: ['key'],
+        onMutates: 1000,
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<number>()
+        },
+      })
+    })
+  })
+
+  it('should infer types for callbacks', () => {
+    doNotExecute(() => {
+      mutationOptions({
+        mutationFn: () => Promise.resolve(5),
+        mutationKey: ['key'],
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<number>()
+        },
+      })
+    })
+  })
+
+  it('should infer types for onError callback', () => {
+    doNotExecute(() => {
+      mutationOptions({
+        mutationFn: () => {
+          throw new Error('fail')
+        },
+        mutationKey: ['key'],
+        onError: (error) => {
+          expectTypeOf(error).toEqualTypeOf<unknown>()
+        },
+      })
+    })
+  })
+
+  it('should infer types for variables', () => {
+    doNotExecute(() => {
+      mutationOptions<number, unknown, { id: string }>({
+        mutationFn: (vars) => {
+          expectTypeOf(vars).toEqualTypeOf<{ id: string }>()
+          return Promise.resolve(5)
+        },
+        mutationKey: ['with-vars'],
+      })
+    })
+  })
+
+  it('should infer context type correctly', () => {
+    doNotExecute(() => {
+      mutationOptions<number, unknown, void, { name: string }>({
+        mutationFn: () => Promise.resolve(5),
+        mutationKey: ['key'],
+        onMutate: () => {
+          return { name: 'context' }
+        },
+        onSuccess: (_data, _variables, context) => {
+          expectTypeOf(context).toEqualTypeOf<{ name: string } | undefined>()
+        },
+      })
+    })
+  })
+
+  it('should error if mutationFn return type mismatches TData', () => {
+    doNotExecute(() => {
+      mutationOptions<number>({
+        // @ts-expect-error this is a good error, because return type is string, not number
+        mutationFn: async () => Promise.resolve('wrong return'),
+      })
+    })
+  })
+
+  it('should allow mutationKey to be omitted', () => {
+    doNotExecute(() => {
+      mutationOptions({
+        mutationFn: () => Promise.resolve(123),
+        onSuccess: (data) => {
+          expectTypeOf(data).toEqualTypeOf<number>()
+        },
+      })
+    })
+  })
+
+  it('should infer all types when not explicitly provided', () => {
+    doNotExecute(() => {
+      expectTypeOf(
+        mutationOptions({
+          mutationFn: (id: string) => Promise.resolve(id.length),
+          mutationKey: ['key'],
+          onSuccess: (data) => {
+            expectTypeOf(data).toEqualTypeOf<number>()
+          },
+        }),
+      ).toEqualTypeOf<
+        WithRequired<
+          UseMutationOptions<number, unknown, string, unknown>,
+          'mutationKey'
+        >
+      >()
+      expectTypeOf(
+        mutationOptions({
+          mutationFn: (id: string) => Promise.resolve(id.length),
+          onSuccess: (data) => {
+            expectTypeOf(data).toEqualTypeOf<number>()
+          },
+        }),
+      ).toEqualTypeOf<
+        OmitKeyof<
+          UseMutationOptions<number, unknown, string, unknown>,
+          'mutationKey'
+        >
+      >()
+    })
+  })
+
+  it('should infer types when used with useMutation', () => {
+    doNotExecute(() => {
+      const mutation = useMutation(
+        mutationOptions({
+          mutationKey: ['key'],
+          mutationFn: () => Promise.resolve('data'),
+          onSuccess: (data) => {
+            expectTypeOf(data).toEqualTypeOf<string>()
+          },
+        }),
+      )
+      expectTypeOf(mutation).toEqualTypeOf<
+        UseMutationResult<string, unknown, void, unknown>
+      >()
+
+      // should allow when used with useMutation without mutationKey
+      useMutation(
+        mutationOptions({
+          mutationFn: () => Promise.resolve('data'),
+          onSuccess: (data) => {
+            expectTypeOf(data).toEqualTypeOf<string>()
+          },
+        }),
+      )
+    })
+  })
+
+  it('should be used with useMutation and spread with additional options', () => {
+    doNotExecute(() => {
+      const result = useMutation({
+        ...mutationOptions({
+          mutationKey,
+          mutationFn,
+        }),
+        retry: 3,
+      })
+
+      expectTypeOf(result).toEqualTypeOf<
+        UseMutationResult<{ field: string }, unknown, { id: string }, unknown>
+      >()
+    })
+  })
+
+  it('should preserve mutationKey for use with useIsMutating/queryClient', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationKey: ['todos', 'create'] as const,
+        mutationFn: (input: { title: string }) =>
+          Promise.resolve({ id: 1, title: input.title }),
+      })
+
+      // mutationKey is MutationKey, usable with filters
+      expectTypeOf(options.mutationKey).toMatchTypeOf<MutationKey>()
+    })
+  })
+
+  it('should work with void variables (no arguments to mutationFn)', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationKey,
+        mutationFn: () => Promise.resolve('done'),
+      })
+
+      const result = useMutation(options)
+
+      // mutate should be callable without arguments
+      result.mutate()
+    })
+  })
+
+  it('should infer TContext from onMutate when explicitly typed', () => {
+    doNotExecute(() => {
+      mutationOptions<
+        { success: boolean },
+        unknown,
+        string,
+        { previousData: string }
+      >({
+        mutationKey,
+        mutationFn: (_id: string) => Promise.resolve({ success: true }),
+        onMutate: (variables) => {
+          expectTypeOf(variables).toEqualTypeOf<string>()
+          return { previousData: 'backup' }
+        },
+        onError: (_error, variables, context) => {
+          expectTypeOf(variables).toEqualTypeOf<string>()
+          expectTypeOf(context).toEqualTypeOf<
+            { previousData: string } | undefined
+          >()
+        },
+        onSuccess: (data, variables, context) => {
+          expectTypeOf(data).toEqualTypeOf<{ success: boolean }>()
+          expectTypeOf(variables).toEqualTypeOf<string>()
+          expectTypeOf(context).toEqualTypeOf<
+            { previousData: string } | undefined
+          >()
+        },
+        onSettled: (data, _error, variables, context) => {
+          expectTypeOf(data).toEqualTypeOf<{ success: boolean } | undefined>()
+          expectTypeOf(variables).toEqualTypeOf<string>()
+          expectTypeOf(context).toEqualTypeOf<
+            { previousData: string } | undefined
+          >()
+        },
+      })
+    })
+  })
+
+  it('should work with complex generic types', () => {
+    doNotExecute(() => {
+      interface CreateUserInput {
+        name: string
+        email: string
+        roles: Array<'admin' | 'user'>
+      }
+
+      interface User {
+        id: number
+        name: string
+        email: string
+        roles: Array<'admin' | 'user'>
+        createdAt: Date
+      }
+
+      interface OptimisticContext {
+        previousUsers: Array<User>
+        tempId: number
+      }
+
+      const options = mutationOptions<
+        User,
+        unknown,
+        CreateUserInput,
+        OptimisticContext
+      >({
+        mutationKey: ['users', 'create'] as const,
+        mutationFn: (input: CreateUserInput) =>
+          Promise.resolve({
+            id: 1,
+            ...input,
+            createdAt: new Date(),
+          } as User),
+        onMutate: (variables) => {
+          expectTypeOf(variables).toEqualTypeOf<CreateUserInput>()
+          return { previousUsers: [], tempId: Date.now() }
+        },
+        onError: (_error, _variables, context) => {
+          expectTypeOf(context).toEqualTypeOf<OptimisticContext | undefined>()
+        },
+        onSuccess: (data, variables, context) => {
+          expectTypeOf(data).toEqualTypeOf<User>()
+          expectTypeOf(variables).toEqualTypeOf<CreateUserInput>()
+          expectTypeOf(context).toEqualTypeOf<OptimisticContext | undefined>()
+        },
+      })
+
+      const result = useMutation(options)
+      expectTypeOf(result.data).toEqualTypeOf<User | undefined>()
+    })
+  })
+
+  it('should be usable in a factory pattern', () => {
+    doNotExecute(() => {
+      const mutations = {
+        create: () =>
+          mutationOptions({
+            mutationKey: ['items', 'create'] as const,
+            mutationFn: (input: { name: string }) =>
+              Promise.resolve({ id: 1, name: input.name }),
+          }),
+        delete: () =>
+          mutationOptions({
+            mutationKey: ['items', 'delete'] as const,
+            mutationFn: (_id: number) => Promise.resolve(undefined),
+          }),
+      }
+
+      const createResult = useMutation(mutations.create())
+      expectTypeOf(createResult.data).toEqualTypeOf<
+        { id: number; name: string } | undefined
+      >()
+
+      const deleteResult = useMutation(mutations.delete())
+      expectTypeOf(deleteResult.data).toEqualTypeOf<undefined>()
+    })
+  })
+
+  it('should work with queryClient mutation cache filters', () => {
+    doNotExecute(async () => {
+      const queryClient = useQueryClient()
+      const options = mutationOptions({
+        mutationKey: ['key'] as const,
+        mutationFn: () => Promise.resolve('data'),
+      })
+
+      queryClient.getMutationCache().findAll({
+        mutationKey: options.mutationKey,
+      })
+    })
+  })
+
+  it('should infer types when used with queryClient.isMutating', () => {
+    doNotExecute(() => {
+      const queryClient = new QueryClient()
+
+      const isMutating = queryClient.isMutating({
+        mutationKey: mutationOptions({
+          mutationKey: ['key'],
+          mutationFn: () => Promise.resolve(5),
+        }).mutationKey,
+      })
+      expectTypeOf(isMutating).toEqualTypeOf<number>()
+    })
+  })
+
+  it('should handle union type variables', () => {
+    doNotExecute(() => {
+      type Action =
+        | { type: 'create'; payload: { name: string } }
+        | { type: 'delete'; payload: { id: number } }
+
+      const options = mutationOptions({
+        mutationKey,
+        mutationFn: (_action: Action) => Promise.resolve('done'),
+      })
+
+      const result = useMutation(options)
+      result.mutate({ type: 'create', payload: { name: 'test' } })
+      result.mutate({ type: 'delete', payload: { id: 1 } })
+    })
+  })
+
+  it('should properly narrow mutationKey presence based on overload', () => {
+    doNotExecute(() => {
+      // With mutationKey: mutationKey is required in the return type
+      const withKey = mutationOptions({
+        mutationKey: ['key'] as const,
+        mutationFn: () => Promise.resolve(1),
+      })
+      expectTypeOf(withKey.mutationKey).toMatchTypeOf<MutationKey>()
+
+      // Without mutationKey: mutationKey should not be accessible
+      const withoutKey = mutationOptions({
+        mutationFn: () => Promise.resolve(1),
+      })
+      // @ts-expect-error mutationKey should not exist
+      withoutKey.mutationKey
+    })
+  })
+
+  it('should allow mutationKey to be used as MutationKey', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationKey: ['todos', { status: 'active' }] as const,
+        mutationFn: () => Promise.resolve(true),
+      })
+
+      const key: MutationKey = options.mutationKey
+      expectTypeOf(key).toMatchTypeOf<MutationKey>()
+    })
+  })
+
+  it('should infer types when used with useIsMutating via mutationKey filter', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationKey: ['key'] as const,
+        mutationFn: () => Promise.resolve(5),
+      })
+
+      // mutationKey from mutationOptions can be used in MutationFilters
+      const isMutating = useIsMutating({
+        mutationKey: options.mutationKey,
+      })
+      expectTypeOf(isMutating).toEqualTypeOf<number>()
+    })
+  })
+
+  it('should infer types when used with useIsMutating passing mutationKey directly', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationKey: ['key'] as const,
+        mutationFn: () => Promise.resolve(5),
+      })
+
+      // v4 useIsMutating accepts MutationKey as first arg
+      const isMutating = useIsMutating(options.mutationKey)
+      expectTypeOf(isMutating).toEqualTypeOf<number>()
+    })
+  })
+
+  it('should not allow passing mutationOptions without mutationKey to useIsMutating filter', () => {
+    doNotExecute(() => {
+      const options = mutationOptions({
+        mutationFn: () => Promise.resolve(5),
+      })
+
+      // @ts-expect-error mutationKey does not exist on options without mutationKey
+      useIsMutating({ mutationKey: options.mutationKey })
+    })
+  })
+})
diff --git a/packages/react-query/src/index.ts b/packages/react-query/src/index.ts
index d04d91e70f3..37d93f63088 100644
--- a/packages/react-query/src/index.ts
+++ b/packages/react-query/src/index.ts
@@ -43,6 +43,7 @@ export {
 } from './QueryErrorResetBoundary'
 export { useIsFetching } from './useIsFetching'
 export { useIsMutating } from './useIsMutating'
+export { mutationOptions } from './mutationOptions'
 export { useMutation } from './useMutation'
 export { useInfiniteQuery } from './useInfiniteQuery'
 export { useIsRestoring, IsRestoringProvider } from './isRestoring'
diff --git a/packages/react-query/src/mutationOptions.ts b/packages/react-query/src/mutationOptions.ts
new file mode 100644
index 00000000000..67a4e2b4f0f
--- /dev/null
+++ b/packages/react-query/src/mutationOptions.ts
@@ -0,0 +1,34 @@
+import type { OmitKeyof, WithRequired } from '@tanstack/query-core'
+import type { UseMutationOptions } from './types'
+
+export function mutationOptions<
+  TData = unknown,
+  TError = unknown,
+  TVariables = void,
+  TContext = unknown,
+>(
+  options: WithRequired<
+    UseMutationOptions<TData, TError, TVariables, TContext>,
+    'mutationKey'
+  >,
+): WithRequired<
+  UseMutationOptions<TData, TError, TVariables, TContext>,
+  'mutationKey'
+>
+export function mutationOptions<
+  TData = unknown,
+  TError = unknown,
+  TVariables = void,
+  TContext = unknown,
+>(
+  options: OmitKeyof<
+    UseMutationOptions<TData, TError, TVariables, TContext>,
+    'mutationKey'
+  >,
+): OmitKeyof<
+  UseMutationOptions<TData, TError, TVariables, TContext>,
+  'mutationKey'
+>
+export function mutationOptions(options: unknown) {
+  return options
+}