* Ainu: An indigenous people of Japan, primarily residing on Hokkaido Island.
* Akan: A group of Bantu-speaking peoples in southern Cameroon.
* Albanian: The culture of Albania, with its own language and distinct traditions.
* Algerian: The culture of Algeria, a diverse blend of Berber, Arab, and French influences.
* American: The culture of the United States of America, encompassing various subcultures and traditions.
* Andean: The cultures of the Andes mountain range in South America, including the Inca, Quechua, and Aymara peoples.
* Anglo-Saxon: The culture of the Germanic tribes that settled in England during the 5th and 6th centuries.
* Apache: A group of Native American tribes inhabiting the Southwestern United States.
* Arab: The culture of the Arabic-speaking peoples, spanning across the Middle East and North Africa.
* Argentine: The culture of Argentina, a blend of European and indigenous influences.
* Armenian: The culture of Armenia, with its own language, literature, and art.
* Ashanti: A people and culture originating in the Ashanti region of Ghana.
* Australian: The culture of Australia, encompassing Aboriginal culture and the diverse cultures of its immigrant population.
* Austrian: The culture of Austria, with its rich musical heritage and traditional folklore.
This is not an exhaustive list, as many other cultures could be included. It's important to remember that culture is complex and fluid, and these are just some examples of cultures with names starting with the letter "A."