daddypa
Archie Bunker
Archima
Archimedes
Ardal
Area 51
Arejay Joseph (Arejay from the band Halestorm)
Arendal
Ares
Arf
Arfie
Arfur
Argent
Argo
Argon
Argos
Argus
Argyle
Ari
Aria
Ariadne (Greek mythology, daughter of King Minos of Crete)
Ariel
Ariel (from the movie "The Little Mermaid")
Ariela (Hebrew for "female derivative of lioness")
Arielle
Aries
Arietty
Arioch
Arista Kat
AristoCat
Aristophanes