Keycap: # on Telegram

What it signals here

sticker mapping

Maps to organizational or tech-themed sticker packs; paired with keyboard or internet-culture stickers.

channel use

Used in channel posts to label numbered announcements or to link to a hashtag-categorized archive of content.

group meaning

In large groups, used to tag messages under a specific topic thread, especially in communities that use hashtag organization.

bot context

Sometimes used in bot command descriptions to indicate a numbered input or to represent the '#' character in bot syntax.

See it elsewhere