Atsa may stand for:
Places
Atsa, a village in Haddinnet municipality, Ethiopia
Acronyms ATSA ATSA (airline) (Aero Transporte S.A.), a Peruvian airline Association for the Treatment and Prevention of Sexual Abuse, an international organisation Aviation and Transportation Security Act, United States legislation of 2001 Army Technical Support Agency, British defence research establishment 1982-1995 Association of Togolese Students in America