Ichi may refer to;
- Ichi (2008 film), Japanese film
- Ichi (scarification), facial scarring traditionally used by the Igbo people of West Africa
- Lady Oichi (1547–1583), Japanese woman, sister-in-law of Nohime
- Ichi the Killer (film), Japanese horror film
- Ichi the Killer (manga), Japanese manga
- Zatoichi, fictional blind Japanese swordsman
- International Classification of Health Interventions
- Ichiro Suzuki (born 1973), nickname Ichi, Japanese baseball player