diff --git a/packages/middleware-flexible-checksums/package.json b/packages/middleware-flexible-checksums/package.json
index b929c541b01b4..c26fe92c26657 100644
--- a/packages/middleware-flexible-checksums/package.json
+++ b/packages/middleware-flexible-checksums/package.json
@@ -17,10 +17,13 @@
   "main": "./dist-cjs/index.js",
   "module": "./dist-es/index.js",
   "browser": {
+    "./dist-es/getCrc32ChecksumAlgorithmFunction": "./dist-es/getCrc32ChecksumAlgorithmFunction.browser",
     "./dist-es/streams/create-read-stream-on-buffer": "./dist-es/streams/create-read-stream-on-buffer.browser"
   },
   "react-native": {
+    "./dist-es/getCrc32ChecksumAlgorithmFunction": "./dist-es/getCrc32ChecksumAlgorithmFunction.browser",
     "./dist-es/streams/create-read-stream-on-buffer": "./dist-es/streams/create-read-stream-on-buffer.browser",
+    "./dist-cjs/getCrc32ChecksumAlgorithmFunction": "./dist-cjs/getCrc32ChecksumAlgorithmFunction.browser",
     "./dist-cjs/streams/create-read-stream-on-buffer": "./dist-cjs/streams/create-read-stream-on-buffer.browser"
   },
   "types": "./dist-types/index.d.ts",
@@ -32,6 +35,7 @@
   "dependencies": {
     "@aws-crypto/crc32": "5.2.0",
     "@aws-crypto/crc32c": "5.2.0",
+    "@aws-crypto/util": "5.2.0",
     "@aws-sdk/core": "*",
     "@aws-sdk/types": "*",
     "@smithy/is-array-buffer": "^3.0.0",
diff --git a/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.browser.ts b/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.browser.ts
new file mode 100644
index 0000000000000..1c482b41706c2
--- /dev/null
+++ b/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.browser.ts
@@ -0,0 +1,3 @@
+import { AwsCrc32 } from "@aws-crypto/crc32";
+
+export const getCrc32ChecksumAlgorithmFunction = () => AwsCrc32;
diff --git a/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.ts b/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.ts
new file mode 100644
index 0000000000000..8d38987a975f7
--- /dev/null
+++ b/packages/middleware-flexible-checksums/src/getCrc32ChecksumAlgorithmFunction.ts
@@ -0,0 +1,28 @@
+import { AwsCrc32 } from "@aws-crypto/crc32";
+import { numToUint8 } from "@aws-crypto/util";
+import { Checksum } from "@smithy/types";
+import zlib from "zlib";
+
+export const getCrc32ChecksumAlgorithmFunction = () => {
+  // @ts-expect-error crc32 is defined only for Node.js >v20.15.0+ and >v22.2.0+.
+  if (typeof zlib.crc32 === "undefined") {
+    return AwsCrc32;
+  }
+
+  return class NodeCrc32 implements Checksum {
+    private checksum = 0;
+
+    update(data: Uint8Array) {
+      // @ts-expect-error crc32 is defined only for Node.js >v20.15.0+ and >v22.2.0+.
+      this.checksum = zlib.crc32(data, this.checksum);
+    }
+
+    async digest() {
+      return numToUint8(this.checksum);
+    }
+
+    reset() {
+      this.checksum = 0;
+    }
+  };
+};
diff --git a/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts b/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
index 39e0f192245a0..74a09add4a300 100644
--- a/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
+++ b/packages/middleware-flexible-checksums/src/selectChecksumAlgorithmFunction.ts
@@ -1,9 +1,9 @@
-import { AwsCrc32 } from "@aws-crypto/crc32";
 import { AwsCrc32c } from "@aws-crypto/crc32c";
 import { ChecksumConstructor, HashConstructor } from "@smithy/types";
 
 import { PreviouslyResolved } from "./configuration";
 import { ChecksumAlgorithm } from "./constants";
+import { getCrc32ChecksumAlgorithmFunction } from "./getCrc32ChecksumAlgorithmFunction";
 
 /**
  * Returns the function that will compute the checksum for the given {@link ChecksumAlgorithm}.
@@ -14,7 +14,7 @@ export const selectChecksumAlgorithmFunction = (
 ): ChecksumConstructor | HashConstructor =>
   ({
     [ChecksumAlgorithm.MD5]: config.md5,
-    [ChecksumAlgorithm.CRC32]: AwsCrc32,
+    [ChecksumAlgorithm.CRC32]: getCrc32ChecksumAlgorithmFunction(),
     [ChecksumAlgorithm.CRC32C]: AwsCrc32c,
     [ChecksumAlgorithm.SHA1]: config.sha1,
     [ChecksumAlgorithm.SHA256]: config.sha256,
diff --git a/yarn.lock b/yarn.lock
index cecbf306d72da..5c0b0a0276059 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -74,7 +74,7 @@
   dependencies:
     tslib "^2.6.2"
 
-"@aws-crypto/util@^5.2.0":
+"@aws-crypto/util@5.2.0", "@aws-crypto/util@^5.2.0":
   version "5.2.0"
   resolved "https://registry.npmjs.org/@aws-crypto/util/-/util-5.2.0.tgz"
   integrity sha512-4RkU9EsI6ZpBve5fseQlGNUWKMa1RLPQ1dnjnQoe07ldfIzcsGb5hC5W0Dm7u423KWzawlrpbjXBrXCEv9zazQ==