diff --git a/docs/modules/nats.md b/docs/modules/nats.md
index b79f13299..ec66e015e 100644
--- a/docs/modules/nats.md
+++ b/docs/modules/nats.md
@@ -22,6 +22,10 @@ npm install @testcontainers/nats --save-dev
 [Set credentials:](../../packages/modules/nats/src/nats-container.test.ts) inside_block:credentials
 <!--/codeinclude-->
 
+<!--codeinclude-->
+[No credentials:](../../packages/modules/nats/src/nats-container.test.ts) inside_block:noCredentials
+<!--/codeinclude-->
+
 <!--codeinclude-->
 [Enable JetStream:](../../packages/modules/nats/src/nats-container.test.ts) inside_block:jetstream
 <!--/codeinclude-->
\ No newline at end of file
diff --git a/packages/modules/nats/src/nats-container.test.ts b/packages/modules/nats/src/nats-container.test.ts
index ef73b2a5a..5bd9aca74 100644
--- a/packages/modules/nats/src/nats-container.test.ts
+++ b/packages/modules/nats/src/nats-container.test.ts
@@ -9,7 +9,23 @@ describe("NatsContainer", { timeout: 180_000 }, () => {
   // connect {
   it("should start, connect and close", async () => {
     const container = await new NatsContainer(IMAGE).start();
+    expect(container.getConnectionOptions().pass).toEqual("test");
+    expect(container.getConnectionOptions().user).toEqual("test");
+    // establish connection
+    const nc = await connect(container.getConnectionOptions());
 
+    await nc.close();
+    // check if the close was OK
+    const err = await nc.closed();
+    expect(err).toBe(undefined);
+
+    await container.stop();
+  });
+  // noCredentials {
+  it("should start, connect and close when noCredentials is true", async () => {
+    const container = await new NatsContainer(IMAGE).withCredentials(false).start();
+    expect(container.getConnectionOptions().user).toBeUndefined();
+    expect(container.getConnectionOptions().pass).toBeUndefined();
     // establish connection
     const nc = await connect(container.getConnectionOptions());
     // close the connection
diff --git a/packages/modules/nats/src/nats-container.ts b/packages/modules/nats/src/nats-container.ts
index c3c5eb356..9ea52a288 100755
--- a/packages/modules/nats/src/nats-container.ts
+++ b/packages/modules/nats/src/nats-container.ts
@@ -10,6 +10,7 @@ const PASS_ARGUMENT_KEY = "--pass";
 export class NatsContainer extends GenericContainer {
   private args = new Set<string>();
   private values = new Map<string, string | undefined>();
+  private useCredentials = true;
 
   constructor(image: string) {
     super(image);
@@ -42,6 +43,18 @@ export class NatsContainer extends GenericContainer {
     return this;
   }
 
+  public withCredentials(useCredentials: boolean): this {
+    this.useCredentials = useCredentials;
+    if (!useCredentials) {
+      this.args.delete(USER_ARGUMENT_KEY);
+      this.args.delete(PASS_ARGUMENT_KEY);
+    } else {
+      this.withUsername("test");
+      this.withPass("test");
+    }
+    return this;
+  }
+
   public withArg(name: string, value: string): this;
   public withArg(name: string): this;
   public withArg(...args: [string, string] | [string]): this {
@@ -69,7 +82,11 @@ export class NatsContainer extends GenericContainer {
 
   public override async start(): Promise<StartedNatsContainer> {
     this.withCommand(this.getNormalizedCommand());
-    return new StartedNatsContainer(await super.start(), this.getUser(), this.getPass());
+    return new StartedNatsContainer(
+      await super.start(),
+      (this.useCredentials && this.getUser()) || undefined,
+      (this.useCredentials && this.getPass()) || undefined
+    );
   }
 
   private getUser(): string | undefined {