Encyclopedias, Almanacs, Transcripts, and Maps
- Amador Guerrero, Manuel (1833–1909)
- Amador, Manuel E. (1869–1952)
- Amahuaca
- Amahuacas
- Amapá
- Amapala, Treaties of (1895, 1907)
- Amar y Borbón, Antonio (1742–1826)
- Amaral, Antônio José Azevedo do (1881–1942)
- Amaral, Tarsila do (1886–1973)
- Amat y Junient, Manuel de (1704–1782)
- Amateur Radio
- Amateur Theatrics
- Amauta
- Amazon Basin, Archaeology
- Amazon Pact (1978)
- Amazon Region
- Amazon River
- Amazonas
- Amazonia
- Ambae