diff --git a/packages/@winglang/sdk/src/shared/bundling.ts b/packages/@winglang/sdk/src/shared/bundling.ts
index 568bb3ba83f..039db61c10c 100644
--- a/packages/@winglang/sdk/src/shared/bundling.ts
+++ b/packages/@winglang/sdk/src/shared/bundling.ts
@@ -1,3 +1,4 @@
+import { execFileSync } from "child_process";
 import * as crypto from "crypto";
 import { mkdirSync, realpathSync, statSync, writeFileSync } from "fs";
 import { stat } from "fs/promises";
@@ -132,6 +133,32 @@ export function createBundle(
   };
 }
 
+/**
+ * Archives (zips) the contents of `srcDir` into a single zip file at `destFile`.
+ *
+ * This replaces cdktf's `TerraformAsset` with `AssetType.ARCHIVE`, whose internal
+ * implementation shells out to `node .../private/fs.js <src> <dest>` using a
+ * command string that does NOT quote the paths. When the project directory (or
+ * any path component) contains spaces, the shell splits on the spaces and the
+ * archive is written to the wrong location (or fails entirely), which later
+ * causes errors like `opening S3 object source (assets/.../archive.zip): no
+ * such file or directory` during `terraform apply`.
+ *
+ * Instead of relying on that shell string, we invoke the archiver directly with
+ * `execFileSync` and an array of arguments (no shell), so paths containing
+ * spaces are handled correctly. The resulting zip file is then presented to
+ * `TerraformAsset` as a single `AssetType.FILE`, which is simply copied into the
+ * output directory with `copyFileSync` (no shell involved).
+ */
+export function createArchive(srcDir: string, destFile: string): void {
+  // Reuse the archiver bundled with cdktf (this repo pins cdktf to an exact
+  // version, so this internal module path is stable). It is invoked as a CLI
+  // with array arguments rather than a shell string to preserve spaces.
+  // eslint-disable-next-line import/no-extraneous-dependencies, @typescript-eslint/no-require-imports
+  const archiveScript = require.resolve("cdktf/lib/private/fs") as string;
+  execFileSync(process.execPath, [archiveScript, srcDir, destFile]);
+}
+
 export interface SourceMap {
   sourceRoot?: string;
   sources: string[];
diff --git a/packages/@winglang/sdk/src/target-tf-aws/function.ts b/packages/@winglang/sdk/src/target-tf-aws/function.ts
index 343be3d29cb..2afc785ae12 100644
--- a/packages/@winglang/sdk/src/target-tf-aws/function.ts
+++ b/packages/@winglang/sdk/src/target-tf-aws/function.ts
@@ -1,3 +1,4 @@
+import { resolve } from "path";
 import { AssetType, Lazy, TerraformAsset } from "cdktf";
 import { Construct } from "constructs";
 import { App } from "./app";
@@ -11,7 +12,7 @@ import { S3Object } from "../.gen/providers/aws/s3-object";
 import { SecurityGroup } from "../.gen/providers/aws/security-group";
 import * as cloud from "../cloud";
 import { NotImplementedError } from "../core/errors";
-import { createBundle } from "../shared/bundling";
+import { createArchive, createBundle } from "../shared/bundling";
 import { DEFAULT_MEMORY_SIZE } from "../shared/function";
 import { NameOptions, ResourceNames } from "../shared/resource-names";
 import {
@@ -272,11 +273,17 @@ export class Function extends AwsFunction {
 
     const bundle = createBundle(this.entrypoint, externalLibraries);
 
+    // Archive the bundle directory into a zip ourselves, then reference it as a
+    // single file. This avoids cdktf's `AssetType.ARCHIVE` shelling out with an
+    // unquoted path, which breaks when the directory contains spaces.
+    const archiveZip = resolve(bundle.directory, "..", "archive.zip");
+    createArchive(bundle.directory, archiveZip);
+
     // would prefer to create TerraformAsset in the constructor, but using a CDKTF token for
     // the "path" argument isn't supported
     const asset = new TerraformAsset(this, "Asset", {
-      path: bundle.directory,
-      type: AssetType.ARCHIVE,
+      path: archiveZip,
+      type: AssetType.FILE,
     });
 
     this.bundleHash = bundle.hash;
diff --git a/packages/@winglang/sdk/src/target-tf-azure/function.ts b/packages/@winglang/sdk/src/target-tf-azure/function.ts
index e24ef5fbb4e..247b5e4957d 100644
--- a/packages/@winglang/sdk/src/target-tf-azure/function.ts
+++ b/packages/@winglang/sdk/src/target-tf-azure/function.ts
@@ -1,4 +1,5 @@
 import * as fs from "fs";
+import { resolve } from "path";
 import { AssetType, Lazy, TerraformAsset } from "cdktf";
 import { Construct } from "constructs";
 import { App } from "./app";
@@ -14,7 +15,7 @@ import { StorageBlob } from "../.gen/providers/azurerm/storage-blob";
 import * as cloud from "../cloud";
 import { LiftMap } from "../core";
 import { NotImplementedError } from "../core/errors";
-import { createBundle } from "../shared/bundling";
+import { createArchive, createBundle } from "../shared/bundling";
 import {
   CaseConventions,
   NameOptions,
@@ -250,9 +251,12 @@ export class Function extends cloud.Function {
     );
 
     // Create zip asset from function code
+    const archiveZip = resolve(codeDir, "..", "archive.zip");
+    createArchive(codeDir, archiveZip);
+
     const asset = new TerraformAsset(this, "Asset", {
-      path: `${codeDir}`,
-      type: AssetType.ARCHIVE,
+      path: archiveZip,
+      type: AssetType.FILE,
     });
 
     this.assetPath = asset.path;
diff --git a/packages/@winglang/sdk/src/target-tf-gcp/function.ts b/packages/@winglang/sdk/src/target-tf-gcp/function.ts
index 59d95ae8877..a30301792a0 100644
--- a/packages/@winglang/sdk/src/target-tf-gcp/function.ts
+++ b/packages/@winglang/sdk/src/target-tf-gcp/function.ts
@@ -1,5 +1,5 @@
 import { writeFileSync } from "fs";
-import { join, basename } from "path";
+import { join, basename, resolve } from "path";
 import { AssetType, Lazy, TerraformAsset, Fn } from "cdktf";
 import { Construct } from "constructs";
 import { App } from "./app";
@@ -13,7 +13,7 @@ import { StorageBucketObject } from "../.gen/providers/google/storage-bucket-obj
 import * as cloud from "../cloud";
 import { LiftMap } from "../core";
 import { NotImplementedError } from "../core/errors";
-import { createBundle } from "../shared/bundling";
+import { createArchive, createBundle } from "../shared/bundling";
 import { DEFAULT_MEMORY_SIZE } from "../shared/function";
 import {
   CaseConventions,
@@ -223,9 +223,12 @@ export class Function extends cloud.Function {
       ),
     );
 
+    const archiveZip = resolve(bundle.directory, "..", "archive.zip");
+    createArchive(bundle.directory, archiveZip);
+
     const asset = new TerraformAsset(this, "Asset", {
-      path: bundle.directory,
-      type: AssetType.ARCHIVE,
+      path: archiveZip,
+      type: AssetType.FILE,
     });
 
     this.assetPath = asset.path;
diff --git a/packages/@winglang/sdk/test/shared/bundling.test.ts b/packages/@winglang/sdk/test/shared/bundling.test.ts
index 41e5f18b0ed..857b527cddc 100644
--- a/packages/@winglang/sdk/test/shared/bundling.test.ts
+++ b/packages/@winglang/sdk/test/shared/bundling.test.ts
@@ -1,6 +1,37 @@
+import {
+  writeFileSync,
+  mkdtempSync,
+  readFileSync,
+  mkdirSync,
+  existsSync,
+} from "fs";
+import { tmpdir } from "os";
+import { join } from "path";
 import { describe, it, expect } from "vitest";
 import { encode, decode } from "vlq";
-import { fixSourcemaps } from "../../src/shared/bundling";
+import { createArchive, fixSourcemaps } from "../../src/shared/bundling";
+
+describe("createArchive", () => {
+  it("should create a zip archive when the directory path contains spaces", () => {
+    // create a temp directory with spaces in its name, mirroring the scenario in
+    // https://github.com/winglang/wing/issues/6465 where the project directory
+    // contains a space
+    const root = mkdtempSync(join(tmpdir(), "dir with spaces "));
+    const srcDir = join(root, "src");
+    const destFile = join(root, "archive.zip");
+    mkdirSync(srcDir, { recursive: true });
+    writeFileSync(join(srcDir, "index.js"), "module.exports = {};");
+
+    // WHEN
+    createArchive(srcDir, destFile);
+
+    // THEN
+    expect(existsSync(destFile)).toBe(true);
+    // a valid zip archive starts with the "PK" magic bytes
+    expect(readFileSync(destFile).subarray(0, 2).toString()).toBe("PK");
+    expect(readFileSync(destFile).length).toBeGreaterThan(0);
+  });
+});
 
 describe("fixSourcemaps", () => {
   it("should fix sourcemaps", () => {