Gamertag, username, display name; a Roblox player has multiple names, each having a purpose. Thankfully, usernames and display names chosen years ago can be changed.

Note: if you're trying to change your username because it contains your full name, try contacting Roblox support — they might implement the change for you, free of charge. Navigate to the home page.

ROBLOX allows you to change this username, as well as your Display Name. It’s important to note that there are different rules and applications of both Usernames and Display Names.