Aita is an Etruscan deity, equivalent to the Greek god Hades.
Aita or AITA may also refer to:
- Aita (Morocco), a Bedouin musical style
- Aita (river), a tributary of the Olt in Romania
- Aita, a dialect of the Rotokas language
- All India Tennis Association
- r/AmItheAsshole or AITA, a subreddit