Aichi Prefecture is a prefecture of Japan in the Chūbu region.
Aichi may also refer to:
- Aichi District, Aichi, district in Aichi Prefecture, Japan
- Aichi, Iran, a village in Kurdistan Province, Iran
- Aichi (surname)
- Aichi Sendou, protagonist of the media franchise Cardfight!! Vanguard
- Aichi Steel, Japanese steel manufacturing company
- Aichi University, university in Aichi Prefecture, Japan
- 5908 Aichi, main-belt asteroid
- Aiways (pinyin: Aìchí), a Chinese electric car manufacturer