Telegram DirectoryTelegram's FAQ explains that once a public username is set you can share a t.me/username or username.t.me link; opening it on a phone opens Telegram with that chat. A username can use a to z, 0 to 9 and underscores, and is not case-sensitive.
Public links and invite links
A public group or channel has a username and a link like t.me/name. A private one is shared with an invite link, usually written t.me/ followed by a plus sign and a code. Only people who have the invite link can join a private group, so share it carefully.
What a link reveals
The FAQ says that usernames are public and let people find you in global search and message you without your number. It also says the other person does not see your phone number unless allowed. If you do not want to be found, do not set a username.
Check a link before you tap
Make sure it starts with https://t.me/. A look-alike address is a common trick. See how to join safely.
Telegram facts on this page were read on 14 November 2026 on Telegram's FAQ. Apps change, so check the app for your options.