AP

1. Acción Popular
2. Accounts payable
3. Acetone peroxide
4. ACID Pro
5. Action point
6. Action potential
7. Address plus Port
8. Adjectival phrase
9. Administration Police
10. Adrian Peterson
11. Advance parole
12. Advanced paramedic
13. Advanced Placement 
14. Agent Provocateur
15. Airframe and Powerplant
16. Alkaline phosphatase
17. Allied Press
18. Alternative Press
19. Alternative Press
20. Amalgamation property
21. Amapá
22. Ammonium perchlorate
23. Amphetamine psychosis
24. Anatomy and physiology
25. Andhra Pradesh
26. Ang Pamantasan
27. Animal Planet
28. Anno Persico or Anno Persarum
29. Anomalous propagation
30. Anteroposterior
31. AP Poll
32. AP Poll
33. Application profile
34. Applied physics
35. Applied psychology
36. A-production
37. Area postrema
38. Arithmetic progression
39. Armenian Power
40. Armor-piercing shot and shell
41. Arterial pressure
42. Asia Pacific
43. Asian pride
44. Assistant principal
45. Associate Professor
46. Associated Press
47. Associated Press
48. Atlantic and Pacific Railroad
49. Atlantic Philanthropies
50. Atmospheric pressure
51. Attachment parenting
52. Audemars Piguet
53. Audio Precision
54. Austin Peay State University
55. Autistic psychopathy
56. Automotive Products
57. Autophagosome
58. Autopilot
59. Average precision
60. Average product
61. People's Action
62. Polish Aero Club (Aeroklub Polski)
63. Popular Alliance
64. Province of Ascoli Piceno