USAS or Usas may refer to: Uṣas or Ushas, a Hindu goddess Uşas, a platform game for the MSX 2 USAS (Outer Limits), a space organization in a series of Outer Limits episodes USAS, the ship prefix for "United States Army Ship" USAS (application), a set of applications used by the airline, transportation, and hospitality industries United States Air Service, a precursor to the United States Air Force United States Antarctic Service, a former name of the United States Antarctic Program Usas Escarpment, in Antarctica United Students Against Sweatshops, a United States student organization for worker rights USAS-12, an automatic shotgun