In Entertainment
- "Ah" (song), a song by Japanese J-Pop and rock band Superfly
- A-ha, a New Wave/Synthpop band from Norway
- Alternate History, a subgenre of speculative fiction
- Arcana Heart. a video game series
- Avalon Hill, makers of military-themed board games
- Afterhours.FM, often shortened as Afterhours or just AH, an Internet radio broadcaster playing trance and progressive dance music
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