AMSA or Amsa may refer to:
Amsa-dong, a neighbourhood in Seoul, South Korea Amsa station, a subway station in Seoul, South Korea aMSa, stage name of Super Smash Bros. player Masaya Chikamoto Advanced Manned Strategic Aircraft, project name for the Rockwell B-1 Lancer Advanced Math and Science Academy Charter School, a public charter school in Marlboro, Massachusetts American Medical Student Association American Moving & Storage Association Association of Marist Schools of Australia Australian Maritime Safety Authority Australian Medical Students' Association Aerolineas Mundo S.A.-AMSA, a defunct Dominican airline