Changing your Citibank online login password is a simple process. You can contact us at our helpline +1-888-388-4751 or follow these steps: First, go to the Citibank login page and click on the “Forgot User ID or Password?” link. Enter your credit or debit card number and follow the instructions to verify your identity. Once verified, you can set a new password. Make sure your new password is strong by using a combination of letters, numbers, and special characters. If you run into any problems during this process, feel free to call Citibank customer support at 1-888-388-4751 for help.