Yes, you can change your username on American Express, but the process depends on which platform you're using

American Express lets you change your username on their website and mobile app, though the steps differ slightly between the two. The change takes effect when ready once you confirm it. You'll need your current login credentials and access to the email address on file with your account.

American Express does not let you change your username through their phone line or in person at a branch. You must make the change yourself through the digital platform where you want the new username to work.

Key Takeaways

  • You can change your username on the American Express website by going to Account Settings and selecting the Login ID or Username option.
  • The American Express mobile app has a separate username setting that you change through the app's settings menu, not the website.
  • Your new username takes effect right away, and you'll use it the next time you log in.
  • You cannot change your username by phone or in a branch location — the change must be made online or in the app.

Changing your username on the American Express website

Log into your American Express account at americanexpress.com using your current username and password. Once you're logged in, look for "Account Settings" or "Profile Settings" — this is usually found in a menu at the top right of the page or in a sidebar labeled with your name or initials.

Inside Account Settings, find the section labeled "Login ID," "Username," or "Sign-In Information." Click on it and select the option to change or edit your username. Enter your new username in the field provided. American Express will tell you right away if the username is already taken or does not meet their requirements (usually a minimum length and no special characters).

After you enter your new username, you'll be asked to confirm the change. American Express may ask you to re-enter your password or verify your identity before finalizing it. Once confirmed, the change is complete and your new username is active when ready.

Changing your username in the American Express mobile app

Open the American Express app on your phone and log in if you're not already signed in. Tap the menu icon (usually three horizontal lines) or look for a settings gear icon, typically located at the bottom or top of the screen depending on whether you're using iOS or Android.

Navigate to "Settings" or "Account Settings" within the app. Look for an option labeled "Login ID," "Username," or "Sign-In Information." Tap it and select "Change" or "Edit." Enter your new username and follow the prompts to confirm your identity if requested.

The username change in the app is separate from your website username. If you want the same username on both platforms, you'll need to change it in both places. The app change takes effect when ready, and you'll use your new username the next time you log into the mobile app.

What happens to your old username

Once you change your username, your old username becomes available for someone else to use. American Express does not hold old usernames in reserve. If you change your mind later, you cannot reclaim your previous username — you would need to choose a different new one.

Your account number, card number, and all your account information stay the same. Changing your username does not affect your credit cards, rewards, or any other part of your account. Only the way you log in changes.

Username requirements and common issues

American Express usernames typically need to be between 6 and 32 characters long and can include letters, numbers, and some symbols (though hyphens and underscores are usually allowed while special characters like @ or ! are not). The system will tell you when ready if your chosen username does not meet these rules.

If you see a message that your username is already taken, try adding numbers or a variation. If you're locked out of your account or cannot remember your current username, use the "Forgot Username" link on the American Express login page — they'll send a reminder to your registered email address.

Changing your password versus your username

Your username and password are separate. Changing your username does not change your password, and changing your password does not change your username. If you want to update both, you'll need to do them in separate steps within Account Settings.

For security reasons, American Express recommends changing your password regularly even if you keep the same username. You can change your password in the same Account Settings area where you change your username.

Frequently Asked Questions

Will changing my username affect my rewards or account history?

No. Your username is only how you log in. Your rewards balance, transaction history, card information, and everything else on your account stays exactly the same. The change only affects your login credentials.

Can I use the same username on the website and the app?

Yes, but you have to set them separately. Changing your username on the website does not automatically change it in the app. You'll need to go into the app settings and make the same change there if you want them to match.

What if I forget my new username after I change it?

Use the "Forgot Username" link on the American Express login page. They'll send your current username to the email address on file with your account. You can then log in and change it again if needed.

Can I change my username if my account is locked or suspended?

No. You must be able to log in to change your username. If your account is locked, contact American Express customer service first to unlock it. Once you can log in again, you can change your username.