To recover your Citibank username and password, follow these steps: Visit the Citibank login page and click on the "Forgot User ID?" or "Forgot Password?" link. You will be prompted to enter your account information, such as your credit or debit card number, security code, and last four digits of your Social Security Number. Follow the on-screen instructions to verify your identity. For further assistance, you can contact Citibank customer service. It's important to keep your account information secure and update your password regularly to protect against unauthorized access.