Encyclopedias, Almanacs, Transcripts, and Maps
- Argirocastro
- Argob
- Argolis
- Arguedas, Alcides
- Arguello, Point
- Argun
- Argyll, Archibald Campbell, 1st duke of
- Argyll, Archibald Campbell, 8th earl of and 1st marquess of
- Argyll, Archibald Campbell, 9th earl of
- Argyllshire
- Argyrokastron
- Ariana
- Arianespace
- Arias de Ávila, Pedro
- Arias de Saavedra, Hernando
- Arias Montanus, Benedictus
- Aridai
- Aridatha
- Ariège
- Arieh