If you’ve forgotten your Citibank username, visit the Citi website and click on the “Sign On” button. Below the login fields, click on the “Forgot User ID?” link. You will be prompted to enter your account information, such as your credit card number or bank account details, and some personal identification. Follow the on-screen instructions to retrieve your username. For additional help, you can always call Citibank customer service at ☎ +☺(888) 725-7924 📞. They will guide you through the process and assist you in recovering your username. Always keep your account details secure and accessible for future reference.