Ahi or AHI may refer to:
Organisations and companies
- Adventist Health International
- American Hellenic Institute
- Asociación de Historietistas Independientes (Association of Independent Comic Creators), an Argentine organisation
- Association for Heritage Interpretation
- Azrak-Hamway, a defunct American toy company
- Independent Herrenian Group (Spanish: Agrupación Herreña Independiente, AHI), a Spanish political party in El Hierro
People
- Ahi (Biblical figure)
- AHI (musician), Canadian singer-songwriter
- Ahi Evren (1169–1261), Turkish Muslim preacher
- Ahmad Ahi (born 1985), Iranian footballer
- Elton Ahi (born 1964), Iranian-American music producer
Places
- Ahi, Kazan, a village in Turkey
- Ahi Beylik, a 14th-century principality in Turkey
- Ahi Subdistrict, a tambon (subdistrict) in Tha Li District, Loei Province, Thailand
- Amahai Airport, Indonesia
- Ahi Rural LLG in Morobe Province, Papua New Guinea
Other uses
- AHI (Amiga), an audio standard
- Ahi (Hinduism), an epithet of Vritra
- Ahi (political party), a political party in Israel
- Ahi language, or Axi, a Loloish language of China
- Apnea–hypopnea index of sleep apnea severity
- Asian Heart Institute, a hospital in Mumbai, India
- Bigeye tuna, one of two fish called ahi in Hawaiian
- Yellowfin tuna, commonly referred to as ahi tuna, from its Hawaiian name
- Tiagba language (ISO 639: ahi), a Kru language of Ivory Coast