You create a Roblox username when you first sign up, and you cannot change it later

Your Roblox username is permanent. Once you choose it during account creation, Roblox does not allow you to change it — not through settings, not by contacting support, not under any circumstance. This means you need to think through your choice before you finish signing up, because if you dislike it afterward, your only option is to create a new account with a different username.

The username you pick is what other players see when you join games, chat, or visit their profiles. It becomes part of your public identity on the platform. Roblox generates a random suggestion when you sign up, but you can replace it with anything you want, as long as it follows their rules.

Key Takeaways

  • Your username is chosen during account creation and cannot be changed afterward, so take time to decide before you finish signing up.
  • Usernames must be between 3 and 20 characters long and can include letters, numbers, and underscores only.
  • Roblox will reject usernames that contain profanity, impersonate real people or celebrities, or violate their community standards.
  • If you already have an account and hate your username, you must create a new account with a different email address to choose a new one.

Username rules and what Roblox will reject

Roblox enforces strict rules about what usernames are allowed. Your username must be between 3 and 20 characters long. You can use letters (uppercase and lowercase), numbers, and underscores only — no spaces, hyphens, periods, or special characters like @ or #.

Roblox will reject usernames that contain profanity or slurs, even if you try to disguise them with numbers or misspellings. The system also blocks usernames that appear to impersonate real celebrities, public figures, or well-known brands. Usernames that reference hate groups, violence, or illegal activity will be refused. If you try to submit a username that breaks these rules, Roblox shows an error message and asks you to choose a different one before you can continue.

The platform also reserves certain usernames for official Roblox accounts and staff members, so you cannot claim those either. If you see a username you want and it says "not available," it is either already taken by another player or it violates the rules.

Steps to create your username when you sign up

When you go to the Roblox website or open the Roblox app and select "Sign Up," you will see a form asking for your birthdate, email address, and password. After you fill those in, Roblox generates a random username suggestion in a field labeled "Username." This suggestion is always available, but you do not have to use it.

To create your own username instead, click or tap the username field and delete the suggested name. Type in the username you want. As you type, Roblox checks in real time whether it is available and follows the rules. If the name is taken or breaks the rules, you will see a red X and a message explaining why. If it is available and acceptable, you will see a green checkmark. Once you see the checkmark, the username is yours to claim — but only if you finish creating the account by clicking "Sign Up" at the bottom of the form.

Do not close the page or navigate away before you complete the sign-up process. If you leave without finishing, your username choice is not saved, and you will have to start over.

Choosing a username you will not regret

Since you cannot change your username later, spend a moment thinking about what you want it to be. Avoid usernames that include your real name, your age, or personal information — other players can see your username, and you want to keep your privacy. Do not use a username that you might feel embarrassed about in a few years, because you will be stuck with it.

Consider whether your username will make sense to you six months from now. Usernames based on temporary interests, inside jokes, or memes can feel dated quickly. If you are unsure, a straightforward, neutral username that reflects your interests or a nickname you actually use is usually the safest choice.

If you are creating an account for a child, think about what other players will see and whether the username is appropriate for a younger person. Avoid anything that could attract unwanted attention or make the child a target for scams or harassment.

What to do if you already have an account and want a different username

If you created a Roblox account and now dislike your username, you cannot change it on your current account. Roblox does not offer a username change feature, and support cannot override this policy. Your only option is to create a new account with a different email address and choose a new username during that sign-up process.

Before you create a new account, understand what you will lose. Any Robux (Roblox's in-game currency) you purchased on your old account stays on that account — it does not transfer. Games you have played, friends you have added, and items you have collected are all tied to your old username and will not move to the new one. You will essentially be starting over from scratch on the new account.

If you have spent money on your old account, contact Roblox support before you abandon it. In rare cases, they may be able to help you recover or transfer certain purchases, though they cannot change your username.

Usernames that look similar or are straightforward to confuse

Roblox allows usernames that look very similar to each other — for example, "Player123" and "Player1234" are two different usernames, and both can exist at the same time. This means scammers sometimes create usernames that are almost identical to popular players or content creators, hoping to trick other users into trading with them or giving them information.

When you are playing games or trading with other players, check the username carefully. Hover over or tap a player's name to see their full profile and confirm you are talking to the right person. Do not assume someone is who they claim to be just because their username is similar to a famous player's name.

Frequently Asked Questions

Can I use spaces or special characters in my username?

No. Roblox usernames can only contain letters, numbers, and underscores. Spaces, hyphens, periods, and symbols like @ or # are not allowed. If you try to use them, Roblox will show an error and ask you to choose a different username.

What is the shortest username I can create?

Your username must be at least 3 characters long. Single-letter or two-letter usernames are not allowed. The maximum length is 20 characters.

Can I reserve a username before I create my account?

No. You can only claim a username by completing the sign-up process. If you think of a username you want but are not ready to create an account yet, someone else could claim it before you do. If that happens, the username becomes unavailable.

Will Roblox let me know if my username is inappropriate?

Roblox filters usernames automatically during sign-up. If your username contains profanity, impersonates a real person, or violates community standards, the system will reject it and show you an error message. You will not be able to create the account until you choose a different username.

If I delete my account, can someone else take my username?

Yes. Once you delete your account, your username becomes available for another player to claim. If you think you might want to use that username again in the future, do not delete the account — create a new one with a different email address instead.