Name
- 12th Indian Division, 1915-19161
- 39th Central India Horse, 20th century2
- A V Roe and Company, aircraft manufacturer, 1910-19631
- AHQ, Aden, Mid 20th century1
- AHQ, Burma, Mid 20th century1
- AHQ, India, Mid 20th century2
- AHQ, Iraq, 1941-19558
- Abbo, Naoum, fl 1915-19351
- Abbott, Louisa, wife of diplomat Robert Abbott, 1761-18031
- Abbott, Marianna, wife of diplomat John Abbott, c 1750-18162
- Abraham, William Ernest Victor, army officer and oil company employee, 1897-19801
- Abu Dhabi Company for Onshore Oil Operations, 1936-13
- Abū Khayl, Family, 20th century1
- Academy of Persian Language and Literature, 1935-1
- Aden Armed Police Force, 19th century - 20th century2
- Aden Boundary Commission, 1902?-190511
- Aden Boundary Commission, Commissioner, 1902-19055
- Aden Labour Association, 1932-19331
- Aden Political Agency, 1839-18541
- Aden Port Trust, 1888-3