Encyclopedias, Almanacs, Transcripts, and Maps
- Alston, William P. (1921–)
- Altaians
- Altalena
- Altamirano, Ignacio Manuel (1834–1893)
- Altar de Sacrificios
- Altays
- Altepetl
- Alterity
- Althusius, Johannes (1557–1638)
- Altun Ha
- Alur
- Alurista (1947–)
- Alva Ixtlilxochitl, Fernando (c. 1578–1650)
- Alvarado Tezozomoc, Don Hernando (c. 1525–c. 1610)
- Alvarado Xicotencatl, Leonor (1524–1583)
- Alvarado y Mesía, Pedro de (1485?–1541?)
- Alvarado, Antonio (1938–)
- Alvarado, Lisandro (1858–1929)
- Alvarado, María Jesús (1878–1971)
- Alvarado, Salvador (1880–1924)