diff --git a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
index 7cb93f3c5b050..1e16e03e23341 100644
--- a/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiateDecl.cpp
@@ -7733,9 +7733,29 @@ static void processFunctionInstantiation(Sema &S,
   FD->setInstantiationIsPending(false);
 }
 
+static std::unique_ptr<MangleContext> createSYCLMangleContext(ASTContext &Ctx) {
+  // For SYCL offload compilation with cross-ABI scenarios (e.g., Microsoft host
+  // + Itanium device on Windows+CUDA), use device mangling context to ensure
+  // consistent kernel name mangling between host and device compilations.
+  const TargetInfo *AuxTarget = Ctx.getAuxTargetInfo();
+  if (AuxTarget && Ctx.getTargetInfo().getCXXABI().isMicrosoft() &&
+      AuxTarget->getCXXABI().isItaniumFamily()) {
+    return std::unique_ptr<MangleContext>(
+        Ctx.createDeviceMangleContext(*AuxTarget));
+  }
+  // Same ABI or no offload target: use standard mangling
+  return std::unique_ptr<MangleContext>(Ctx.createMangleContext());
+}
+
 void Sema::PerformPendingInstantiations(bool LocalOnly, bool AtEndOfTU) {
+  // For SYCL compilation (both host and device), use device-aware mangle
+  // context to ensure consistent kernel name mangling across different
+  // backends (CUDA/HIP) and between host and device compilations.
   std::unique_ptr<MangleContext> MangleCtx(
-      getASTContext().createMangleContext());
+      (LangOpts.SYCLIsHost || LangOpts.SYCLIsDevice)
+          ? createSYCLMangleContext(getASTContext())
+          : std::unique_ptr<MangleContext>(
+                getASTContext().createMangleContext()));
   std::deque<PendingImplicitInstantiation> DelayedImplicitInstantiations;
   while (!PendingLocalImplicitInstantiations.empty() ||
          (!LocalOnly && !PendingInstantiations.empty())) {