diff --git a/.changeset/olive-pugs-repeat.md b/.changeset/olive-pugs-repeat.md
new file mode 100644
index 00000000000..99e5ae99947
--- /dev/null
+++ b/.changeset/olive-pugs-repeat.md
@@ -0,0 +1,5 @@
+---
+'@tanstack/solid-query': patch
+---
+
+Allow optional `initialData` in `infiniteQueryOptions`, matching react-query
diff --git a/packages/solid-query/src/__tests__/infiniteQueryOptions.test-d.tsx b/packages/solid-query/src/__tests__/infiniteQueryOptions.test-d.tsx
index be3a19cb97d..fb017d7411d 100644
--- a/packages/solid-query/src/__tests__/infiniteQueryOptions.test-d.tsx
+++ b/packages/solid-query/src/__tests__/infiniteQueryOptions.test-d.tsx
@@ -136,4 +136,23 @@ describe('infiniteQueryOptions', () => {
       }>
     >()
   })
+
+  it('should allow optional initialData object', () => {
+    const initialData = { wow: true } as { wow: boolean } | undefined
+    const options = infiniteQueryOptions({
+      queryKey: queryKey(),
+      queryFn: () => initialData,
+      initialData: initialData
+        ? { pages: [initialData], pageParams: [] }
+        : undefined,
+      getNextPageParam: () => 1,
+      initialPageParam: 1,
+    })
+
+    expectTypeOf(options.initialData).toExtend<
+      | InfiniteData<{ wow: boolean } | undefined, number>
+      | (() => InfiniteData<{ wow: boolean } | undefined, number>)
+      | undefined
+    >()
+  })
 })
diff --git a/packages/solid-query/src/infiniteQueryOptions.ts b/packages/solid-query/src/infiniteQueryOptions.ts
index 1648882d2f3..984347653bf 100644
--- a/packages/solid-query/src/infiniteQueryOptions.ts
+++ b/packages/solid-query/src/infiniteQueryOptions.ts
@@ -16,7 +16,10 @@ export type UndefinedInitialDataInfiniteOptions<
   TPageParam = unknown,
 > = Accessor<
   InfiniteQueryOptions<TQueryFnData, TError, TData, TQueryKey, TPageParam> & {
-    initialData?: undefined
+    initialData?:
+      | undefined
+      | NonUndefinedGuard<InfiniteData<TQueryFnData, TPageParam>>
+      | (() => NonUndefinedGuard<InfiniteData<TQueryFnData, TPageParam>>)
   }
 >