GitHub Username Search: Find Users and Check Availability

On GitHub, your username is more than a profile label. It sits in the address of every repository you own, as in github.com/name/repo, so it ends up in clone commands, package manifests, README badges and links other people paste into their own projects. That makes GitHub a site where people search for a username for two reasons: to find a specific developer, or to find out whether a name is still free before they commit to it.

A GitHub username is the unique login name of a personal account, and it forms the first part of every repository URL that account owns.

This guide covers both. The short answer to how to search a username in GitHub: open github.com/username if you know the exact name, or use the search bar and switch the results to Users if you only know part of it. The rest sticks to what GitHub itself offers and what GitHub Docs say about renames.

The fastest way: go straight to the profile URL

The fastest way to find a GitHub user is to type their profile URL. If you already know the exact username, skip search entirely. Type github.com/ followed by the name. A profile page means someone owns that name. A 404 page means no user or organization currently has it.

That last part is easy to miss. Users and organizations share one namespace on GitHub, so github.com/acme could be a person, a company, or an open source project. The page itself tells you which: organization pages list repositories and members, while personal profiles show a contribution graph and pinned repositories.

Searching for users when you only know part of the name

If you only know part of the name, use GitHub search with qualifiers. When you do not know the exact handle, use GitHub's search bar and switch the results to Users, or add type:user to your query. GitHub Docs list a set of qualifiers that narrow user search further. These are the ones that matter most for finding a person:

Qualifier	What it does	Example
type:user / type:org	Limits results to personal accounts or to organizations	acme type:org
in:login	Matches the word inside usernames	kenya in:login
in:name	Matches the name shown on the profile	bolton in:name
fullname:	Matches a full profile name	fullname:jane doe
location:	Matches the location field people chose to fill in	location:lisbon
language:	Filters by the languages of a user's repositories	language:rust
followers: / repos:	Filters by follower or repository count	followers:>100

You can combine them. maria in:login language:python location:berlin is a reasonable way to find a developer you met at a meetup when you only remember a first name, a city and what they work on. The full list, including date filters, is on the GitHub Docs page on searching users.

Keep in mind that profile fields like name and location are optional and self-reported. A search that returns nothing does not mean the person is not on GitHub. It may just mean they left those fields blank.

How to check if a GitHub username is available

A GitHub username is available if github.com/name returns a 404 and the sign-up form accepts it. The profile URL test above works for one name. For a quicker answer, the GitHub username checker looks the name up through GitHub's public API and also lists the character rules, so you can see right away whether a name is even valid. GitHub usernames allow letters, numbers and single hyphens, with no hyphen at the start or end.

A few things to know before you get attached to a name:

• GitHub's username policy says names are first come, first served. GitHub does not accept requests to release, transfer or reclaim a username because it looks inactive or unused. The only process it describes is for valid trademark complaints.
• An empty profile with zero repositories still owns the name. If the account you want looks abandoned, plan on a variation instead of waiting.
• The sign-up or rename form is the final word. If GitHub accepts the name there, it is yours.

If you want the same handle on GitHub and everywhere else you publish, check it across more sites at once. Search a username across 3,450+ sites with FreeUsername. It is free, needs no sign-up and takes up to five usernames per search, so you can compare a few spellings side by side. A "Not found" result is a good sign, not a guarantee; confirm on the platform before you announce anything.

Example: checking nightowl92

Say you want the handle nightowl92 for a new project.

1. Open github.com/nightowl92. A profile page means it is taken. A 404 means no user or organization has it right now.
2. Run it through the GitHub checker to confirm it fits the rules: letters, numbers and single hyphens only.
3. Search nightowl92 on the main search to see where else it is in use. Our engine sends these checks from our server, so a few sites may show Blocked. Instagram and Threads are not checked automatically; use the manual guides in the checker hub.
4. If GitHub is free, register it there first, since that name goes into every repo URL.

What happens when you change your GitHub username

When you change your GitHub username, repo links redirect but your old profile and gist links break. Renaming is allowed and only takes a few clicks: Settings, then Account, then Change username. The effects last much longer. According to GitHub Docs on username changes:

Item	After a rename
Repository links	Redirect from the old name to the new one
Profile URL github.com/oldname	Returns a 404
Gist links	Change, and old links return a 404
Old username	Released, so anyone can claim it
Commits	Stay attributed to you if tied to an email on your account

The release of the old name and the repository redirects interact in a way that catches people out. GitHub Docs note that if the new owner of your old username creates a repository with the same name as one of yours, that overrides the redirect. Links that used to land on your project would then land on theirs.

So if you rename, update the remote URL in your local clones, fix links in READMEs, package registries and your website, and watch for anyone who claims your old name and uses it to pose as you. That is worth reporting to GitHub.

Finding someone who renamed

To find someone who renamed, follow one of their old repository links. Because old profile URLs return a 404, a dead github.com/oldname link often just means the person renamed. Try one of their repository links: if it still works, it will redirect you to the new owner name. You can also search for the project name in GitHub search, or check the project's website or package page, which usually links the current account.

Stick to what the person has made public. If someone renamed or deleted an account on purpose, take that as a sign they do not want to be found under the old name.

Related checks

The most useful related check is domain availability. Developers often want the same name on several platforms. The name checker adds domain availability for .com, .net, .org, .io, .us, .app and .dev, which helps if the project needs a website too. For picking a name that is less likely to be taken everywhere, see how to choose a unique username, and for other platforms, browse the checker hub.

FreeUsername is not affiliated with GitHub. GitHub and other platform names are trademarks of their owners.