The Atlantic Universities Athletics Association was founded in 1974, with the merging of the Atlantic Intercollegiate Athletic Association and the Atlantic Women's Intercollegiate Athletic Association. Prior to the acceptance of the Memorial University of Newfoundland, the AIAA, which dates back to the late 19th century, was known as the Maritime Intercollegiate Athletic Association. In 1999, the AUAA changed its name to Atlantic University Sport.

Member Schools

• Acadia Axemen, Acadia Axewomen (Acadia University)
• CBU Capers (Cape Breton University)
• Dalhousie Tigers (Dalhousie University)
• Memorial Sea-Hawks (Memorial University of Newfoundland)
• Mount Allison Mounties (Mount Allison University)
• Moncton Aigles Bleu, Moncton Anges Bleu (Université de Moncton)
• UNB Varsity Reds (University of New Brunswick)
• UPEI Panthers (University of Prince Edward Island)
• Saint Mary's Huskies (Saint Mary's University)
• St. Francis Xavier X-Men, St. Francis Xavier X-Women (St. Francis Xavier University)
• St. Thomas Tommies (St. Thomas University)