APB
- 6-APB
- APB (1987 video game)
- APB (TV series)
- APB (band)
- Abattoir Public de Bujumbura
- Accounting Principles Board
- Acquisition Program Baseline
- Advanced Peripheral Bus
- Aft pressure bulkhead
- Albany Pine Bush
- All Points Bulletin (disambiguation)
- All-points bulletin
- Alliance for Brazil
- Apoptygma Berzerk
- Appley Bridge railway station
- Armor-piercing bullet
- Asia Pacific Breweries
- Atrial premature beat
- Atrocities Prevention Board
- Auditing Practices Board
- List of auxiliaries of the United States Navy
- Love Wars
- Stechkin automatic pistol