AH

1. Accretive Health
2. Achievement Hunter
3. Adenomatous
4. Adolf Hitler (1889-1945)
5. Afterhours
6. After-hours
7. A-ha
8. Air handler
9. Albert Heijn
10. Albert Heijn,
11. Alternate History
12. Ampere-hour
13. Anhui
14. Anna Kendrick (born 1985)
15. Anne Hathaway (born 1982)
16. Arcana Heart
17. Artificial Horizon
18. Asian Highway
19. Attohenry (aH)
20. Auction house
21. Austria–Hungary
22. Authentication Header
23. Avalon Hill
24. Hijri year (Anno Hegirae)