Where to find your Amex username
Your American Express username is the email address or account number you use to log into your Amex account online or in the mobile app. If you have forgotten it, Amex shows it to you in three places: the login page itself, your account settings once you are logged in, and in an email Amex sent when you first opened your account.
The fastest way is to go to americanexpress.com, click "Log In" at the top right, and look for the link that says "Forgot your User ID?" This takes you to a page where you enter your card number or Social Security Number, and Amex displays your username on the next screen. You do not need to reset anything — you are just retrieving what you already have.
If you prefer not to use the website, you can call American Express directly at the number on the back of your card. A representative can confirm your username over the phone after verifying your identity. This is useful if you do not have your card number handy or if you want to confirm the username before attempting to log in.
Key Takeaways
- Your Amex username is the email address or account number you chose when you opened your account, and it does not change unless you update it yourself.
- The "Forgot your User ID?" link on americanexpress.com retrieves your username without resetting your password.
- You can also call the customer service number on the back of your card to have a representative tell you your username.
- Once you know your username, you can log into the Amex website or mobile app to view your account and statements.
Using the Amex website to retrieve your username
Go to americanexpress.com and look for the "Log In" button in the top right corner of the page. Click it, and you will see the login form with fields for your username and password.
Below the login fields, you will see a link that says "Forgot your User ID?" Click this link. Amex will ask you to enter either your card number or the last four digits of your Social Security Number to verify your identity. Enter whichever information you have available.
After you submit this information, Amex displays your username on the confirmation page. Write it down or take a screenshot so you have it for future logins. You can then use this username to log in normally, or you can also update it to something different in your account settings if you prefer.
Checking your account settings after you log in
If you already know your password and can log into your Amex account, your username appears in your account settings. Once you are logged in, look for a menu option labeled "Account" or "Settings" — the exact location varies slightly depending on whether you are using the website or the mobile app.
In the account settings section, you will see your profile information, which includes your username. This is also the place where you can change your username to something different if you want to. Amex allows you to update your username to a different email address or account identifier, though you will need to confirm the change through a verification email.
Finding your username in old account emails
When you first opened your American Express account, Amex sent you a welcome email that included your username. If you still have access to the email account you used to open the card, search for emails from American Express using keywords like "welcome," "account," or "username."
The welcome email typically contains your account number and instructions for setting up online access, including the username you created. If you cannot find the welcome email, search for any email from Amex that contains account information — these often display your username in the body of the message or in a signature line.
What to do if you cannot remember your email address
If your username is an email address and you cannot remember which email you used, start by checking the email accounts you use most often. Log into each one and search for messages from American Express. The welcome email will show you which address was registered to your account.
If you do not find anything in your email, call American Express at the number on your card. A representative can confirm which email address is on file for your account. They can also help you change it to a different email address if you no longer have access to the original one.
Updating your username if you want to change it
You can change your Amex username at any time through your account settings. Log into americanexpress.com, go to your account or profile settings, and look for an option to edit your username or user ID. Amex will ask you to enter a new username and confirm it.
If you want to change your username to a different email address, Amex will send a verification email to the new address. You must click the link in that email to confirm the change. Until you verify it, your old username remains active. This protects your account in case someone else tries to change your username without permission.
Using the Amex mobile app to find your username
Open the American Express mobile app on your phone and tap the menu icon (usually three horizontal lines in the top left or bottom right, depending on your device). Look for an option labeled "Account," "Settings," or "Profile."
In that section, you will see your account information, including your username. The app layout is slightly different from the website, but the information is in the same place. If you are not logged in, you can use the "Forgot your User ID?" option on the login screen, which works the same way as it does on the website.
Frequently Asked Questions
Is my Amex username the same as my card number?
No. Your username is either an email address or an account identifier you chose when you set up online access. Your card number is different and is printed on the front of your card. You use your username and password to log in, not your card number.
Can I use my card number instead of my username to log in?
On the Amex login page, you can enter either your username or your card number in the username field. Amex accepts both. However, your actual username is the email address or account ID you created, and that is what appears in your account settings.
What if I forgot both my username and password?
Use the "Forgot your User ID?" link to retrieve your username, then use the "Forgot your Password?" link to reset your password. You will need to verify your identity with your card number or Social Security Number for both steps. After you have both pieces of information, you can log in normally.
Can I have more than one username for the same Amex account?
No. Each Amex account has one username. If you have multiple American Express cards, each one has its own separate online account and username. You can manage multiple cards through one login if they are linked to the same account, but you still use a single username to access them.
Is it safe to share my username with someone else?
Your username alone is not enough to access your account — someone would also need your password. However, it is still best to keep your username private. If someone has both your username and password, they can log into your account and see your balance, statements, and transaction history.