OSAS

OSAS or Osas may refer to:
 * Osas Ighodaro, a Nigerian actress
 * Sleep Apnea - Obstructive Sleep Apnea Syndrome
 * Eternal security - "Once Saved, Always Saved" (a common expression, with the relative acronym OSAS) a soteriological doctrine of the Protestant Christian faith.
 * Overseas Scandinavian Airlines System, see History of Scandinavian Airlines System (pre-1952)