- AH stands for Art History (various universities)
- AH stands for Ass Hole
- AH stands for After Hours
- AH stands for Auction House
- AH stands for Attack Helicopter
- AH stands for Adaptive Hypermedia
- AH stands for Achievement Hunter (gaming)
- AH stands for Adolf Hitler
- AH stands for Affordable Housing
- AH stands for Arterial Hypertension
- AH stands for Austria-Hungary
- AH stands for Alternate History (fiction genre)
- AH stands for Hospital Ship
- AH stands for Arts and Humanities
- AH stands for Aryl Hydrocarbon
- AH stands for American Health (journal)
- AH stands for Alien Hominid (game)
- AH stands for Alyson Hannigan (actress)
- AH stands for Albert Heijn
- AH stands for Army Hospital
- AH stands for Authentication Header
- AH stands for Animal House (movie)
- AH stands for Aldehyde
- AH stands for Antihistamines
- AH stands for Austin-Healy (British automobile brand)
- AH stands for Auditory Hallucination
- AH stands for Application Header (TMN)
- AH stands for Advanced Higher (education)
- AH stands for Ampere-Hour
- AH stands for Arathi Highlands (gaming, World of Warcraft)
- AH stands for Available Hours
- AH stands for Australian Hard (Wheat)
- AH stands for Artificial Horizon
- AH stands for Abbie Hoffman (activist)
- AH stands for Aspen Hill (Maryland)
- AH stands for Alternative Hypothesis
- AH stands for Ad Honorem (Latin: in honor of, epigraphy)
- AH stands for Air Handler
- AH stands for Address Handling (3GPP function of the CSCF)
- AH stands for Armor Holdings, Inc. (now BAE Systems Mobility & Proection Systems)
- AH stands for Allan Houston (NBA Player)
- AH stands for Absolute Humidity
- AH stands for Anno Hegirae
- AH stands for Anchorhead (gaming, Star Wars Galaxies)
- AH stands for Angela Hewitt (classical pianist)