Atia or ATIA may refer to:

People One of the spellings of the Arabic name Atiyah Atia (gens), plebeian family of Rome Atia (mother of Augustus) (85 BC – 43 BC), Roman noblewoman, daughter of Julius Caesar's sister Julia Caesaris, mother of the Emperor Augustus Atia of the Julii, fictional character from the television series Rome, based on Atia the mother of Augustus

Others Ouled Atia, town and commune in M'Sila Province, Algeria Atia, Bulgaria, village in Burgas Province, Bulgaria Assistive Technology Industry Association Access to Information Act, a Canadian statute

See also Atea (disambiguation) Attea, a coastal town of ancient Mysia or of Aeolis Attia Attias Atias Atiyah Attieh family