Oath Breaker

Oath Breaker or Oathbreaker may refer to:
 * Perjurer, someone who intentionally swears a false oath or falsifies an affirmation to tell the truth
 * Oath Breaker (novel), a 2008 novel by Michelle Paver
 * Oathbreaker (band), a Belgian band
 * "Oathbreaker" (Game of Thrones), an episode of Game of Thrones
 * Oathbreakers, a 1989 novel by Mercedes Lackey