Duolingo Username Checker

By WhatsMyName Apps · Reviewed October 18, 2026 · Editorial policy

Your Duolingo username is the name other learners see on leaderboards and on your profile. If you want to add a friend and know their username, or you want to see whether a name is free before you change yours, type it below.

Duolingo username rules

Uniqueness	All usernames are unique. If your new name will not save, another Duolingo account already has it.
Where it shows	On your profile and on the weekly leaderboard.
Allowed characters and length	Not published in Duolingo's help center.
Change frequency	Not published in Duolingo's help center.
Private profiles	You can make your profile private in your privacy settings. That turns off leaderboards and friends.

Sources: Duolingo Help: change my username or email address, Duolingo Help: find, follow and block users. Last reviewed 2026-10-18. Platforms change their rules; the linked help pages are the final word.

How to check a Duolingo username

Type the username exactly, without spaces.
We ask Duolingo's public users lookup for that exact name. A user record means a profile has it; an empty answer means no account uses it right now.
For a taken name, the result links to duolingo.com/profile/<name>, where you can follow the person if their profile is public.
The final test for your own new name is the Username field in your settings: Duolingo only saves a name nobody else has.

Duolingo username taken? What you can do

Add the language you are learning or a short number: janelearnsfr, jane2026.
Use a shorter or longer form of your name, or add your initials.
Duolingo does not publish a way to claim a username from an inactive account, so choose a variation.
If someone uses a username to harass you, Duolingo lets you block and report them from their profile.

How to change your Duolingo username

Open your settings on Duolingo (duolingo.com/settings on the web, or the settings gear in the app).
Edit the Username field.
Tap or click "Save changes".
If the name does not change, another account already has it. Try a variation.

Reserved and restricted names

Duolingo's help center does not publish a list of reserved usernames or a rule for names from inactive accounts. It does let you block and report users who misuse the platform.

Tips

Your username is public on leaderboards, so avoid using your full name if you would rather stay private.
If you make your profile private, friends and leaderboards are turned off, so others cannot follow you.
Share your profile link, duolingo.com/profile/yourname, with friends who want to follow your streak.

Frequently asked questions

How do I find someone on Duolingo by username?

Type their username here to see whether a profile has it, then open the duolingo.com/profile link and follow them from their profile page.

How do I change my Duolingo username?

Go to your settings, edit the Username field and tap "Save changes". If it does not change, the name is taken by another account.

Are Duolingo usernames unique?

Yes. Duolingo says all usernames and email addresses are unique, so two accounts cannot share one.

Why can't I see someone's Duolingo profile?

They may have made their profile private, which turns off leaderboards and friends. A private profile is not the same as a free username.

Also check on other top platforms

Each platform has its own checker page with its own rules. Pick one to test the same name there.

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Not affiliated with Duolingo. WhatsMyName Apps is an independent tool, not endorsed by Duolingo, the WhatsMyName project, Sherlock or Maigret. Results are leads to verify.