Culture or time period
- Austrian cultures457
- Austro-Hungarian Empire (1867-1918)3
- Autonomous Region of Muslim Mindanao14
- Awakateko14
- Awash3
- Aweer people133
- Aymara11
- Ayutthaya period (1677-1767 AD)2
- Azande2
- Aztalan4
- Aztec (1300–1521 AD)22
- Azuchi-Momoyama period (ca. 1573–1603 AD)9
- Ba Bembe3
- Ba Binji1
- Ba Kongo8
- Ba Kuba52
- Ba Kwese5
- Ba Lega9
- Ba Luba15
- Ba Pende24