Go to the American Express website at american express login.

Click on the "Log In" button located in the top right-hand corner of the page.

On the login page, enter your User ID and Password. Your User ID is the unique name you created when you registered for your American Express account. Your Password is the secure code you created during registration to protect your account.

Click on the "Log In" button to access your account.

If you have trouble logging in, click on the "Forgot User ID or Password?" link on the login page to retrieve your login credentials.

If you are a first-time user or need to register for an American Express account, click on the "Create New Online Account" link located below the login button. Follow the prompts to register for a new account.