diff --git a/packages/cloudflare/src/api/config.ts b/packages/cloudflare/src/api/config.ts
index d625f8bd..e52f3d51 100644
--- a/packages/cloudflare/src/api/config.ts
+++ b/packages/cloudflare/src/api/config.ts
@@ -11,10 +11,21 @@ import type {
 	Queue,
 	TagCache,
 } from "@opennextjs/aws/types/overrides.js";
+import type { BuildOptions as EsbuildBuildOptions } from "esbuild";
 
 import assetResolver from "./overrides/asset-resolver/index.js";
 
 export type Override<T extends BaseOverride> = "dummy" | T | LazyLoadedOverride<T>;
+export type EsbuildOverride =
+	| Partial<EsbuildBuildOptions>
+	| ((options: EsbuildBuildOptions) => EsbuildBuildOptions);
+
+export type CloudflareEsbuildOverrides = {
+	/**
+	 * Allows customizing the esbuild configuration used when bundling the worker server.
+	 */
+	bundleServer?: EsbuildOverride;
+};
 
 /**
  * Cloudflare specific overrides.
@@ -55,6 +66,11 @@ export type CloudflareOverrides = {
 	 * @default "none"
 	 */
 	routePreloadingBehavior?: RoutePreloadingBehavior;
+
+	/**
+	 * Low-level overrides for the esbuild invocations performed by the Cloudflare adapter.
+	 */
+	esbuild?: CloudflareEsbuildOverrides;
 };
 
 /**
@@ -71,6 +87,7 @@ export function defineCloudflareConfig(config: CloudflareOverrides = {}): OpenNe
 		cachePurge,
 		enableCacheInterception = false,
 		routePreloadingBehavior = "none",
+		esbuild: esbuildOverrides,
 	} = config;
 
 	return {
@@ -90,6 +107,7 @@ export function defineCloudflareConfig(config: CloudflareOverrides = {}): OpenNe
 		edgeExternals: ["node:crypto"],
 		cloudflare: {
 			useWorkerdCondition: true,
+			...(esbuildOverrides ? { esbuild: esbuildOverrides } : {}),
 		},
 		dangerous: {
 			enableCacheInterception,
@@ -179,6 +197,11 @@ interface OpenNextConfig extends AwsOpenNextConfig {
 			// @default 7
 			maxVersionAgeDays?: number;
 		};
+
+		/**
+		 * Low-level overrides for the esbuild invocations performed by the Cloudflare adapter.
+		 */
+		esbuild?: CloudflareEsbuildOverrides;
 	};
 }
 
diff --git a/packages/cloudflare/src/cli/build/bundle-server.ts b/packages/cloudflare/src/cli/build/bundle-server.ts
index 95402451..c40fcf42 100644
--- a/packages/cloudflare/src/cli/build/bundle-server.ts
+++ b/packages/cloudflare/src/cli/build/bundle-server.ts
@@ -5,8 +5,9 @@ import { fileURLToPath } from "node:url";
 
 import { type BuildOptions, getPackagePath } from "@opennextjs/aws/build/helper.js";
 import { ContentUpdater } from "@opennextjs/aws/plugins/content-updater.js";
-import { build, type Plugin } from "esbuild";
+import { build, type BuildOptions as EsbuildBuildOptions, type Plugin } from "esbuild";
 
+import type { EsbuildOverride } from "../../api/config.js";
 import { getOpenNextConfig } from "../../api/config.js";
 import type { ProjectOptions } from "../project-options.js";
 import { patchVercelOgLibrary } from "./patches/ast/patch-vercel-og-library.js";
@@ -50,6 +51,7 @@ export async function bundleServer(buildOpts: BuildOptions, projectOpts: Project
 	copyPackageCliFiles(packageDistDir, buildOpts);
 
 	const { appPath, outputDir, monorepoRoot, debug } = buildOpts;
+	const cloudflareConfig = getOpenNextConfig(buildOpts).cloudflare;
 	const baseManifestPath = path.join(
 		outputDir,
 		"server-functions/default",
@@ -71,7 +73,7 @@ export async function bundleServer(buildOpts: BuildOptions, projectOpts: Project
 
 	const updater = new ContentUpdater(buildOpts);
 
-	const result = await build({
+	const baseEsbuildOptions: EsbuildBuildOptions = {
 		entryPoints: [openNextServer],
 		bundle: true,
 		outfile: openNextServerBundle,
@@ -92,7 +94,7 @@ export async function bundleServer(buildOpts: BuildOptions, projectOpts: Project
 		// - default nft conditions: https://github.com/vercel/nft/blob/2b55b01/readme.md#exports--imports
 		// - Next no explicit override: https://github.com/vercel/next.js/blob/2efcf11/packages/next/src/build/collect-build-traces.ts#L287
 		// - ESBuild `node` platform: https://esbuild.github.io/api/#platform
-		conditions: getOpenNextConfig(buildOpts).cloudflare?.useWorkerdCondition === false ? [] : ["workerd"],
+		conditions: cloudflareConfig?.useWorkerdCondition === false ? [] : ["workerd"],
 		plugins: [
 			shimRequireHook(buildOpts),
 			inlineDynamicRequires(updater, buildOpts),
@@ -159,7 +161,14 @@ export async function bundleServer(buildOpts: BuildOptions, projectOpts: Project
 			js: `import {setInterval, clearInterval, setTimeout, clearTimeout, setImmediate, clearImmediate} from "node:timers"`,
 		},
 		platform: "node",
-	});
+	};
+
+	const resolvedEsbuildOptions = applyEsbuildOverride(
+		baseEsbuildOptions,
+		cloudflareConfig?.esbuild?.bundleServer
+	);
+
+	const result = await build(resolvedEsbuildOptions);
 
 	fs.writeFileSync(openNextServerBundle + ".meta.json", JSON.stringify(result.metafile, null, 2));
 
@@ -187,6 +196,33 @@ export async function updateWorkerBundledCode(workerOutputFile: string): Promise
 	await writeFile(workerOutputFile, patchedCode);
 }
 
+function applyEsbuildOverride(
+	baseOptions: EsbuildBuildOptions,
+	override: EsbuildOverride | undefined
+): EsbuildBuildOptions {
+	if (!override) {
+		return baseOptions;
+	}
+
+	if (typeof override === "function") {
+		return override(baseOptions);
+	}
+
+	const merged: EsbuildBuildOptions = {
+		...baseOptions,
+		...override,
+	};
+
+	if (override.logOverride || baseOptions.logOverride) {
+		merged.logOverride = {
+			...baseOptions.logOverride,
+			...override.logOverride,
+		};
+	}
+
+	return merged;
+}
+
 /**
  * Gets the path of the worker.js file generated by the build process
  *