ATSA

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