How to Change a MySQL Username Created August 21, 2015 Author Andrew Horton Category WHM / cPanelIn this article, we will show you how to edit the username for a MySQL user.1. Login to cPanel2. Click the MySQL Databases link found in the Databases section. 3. Click the Rename link for the user you wish to change. 4. Enter the new username you wish to use. 5. Click the Proceed button. That’s it!