Breaker may refer to:
- A breaking wave on water
- Breaker (hydraulic), an engineering vehicle attachment
- Breaker (reef), a shallow over which waves break
- Breaker (G.I. Joe), a fictional character in the G.I. Joe universe
- Breaker (Accept album)
- Breaker (For Today album)
- The Breaker, a book by Minette Walters
- Circuit breaker, an electrical overload switch
- A ship breaker, a firm that scraps ships
- B-Boy (born 1978), wrestler
- The Breaker (manhwa), a Korean comic
- A brand of lager brewed in the UK by Coors
- USS Breaker, more than one ship in the US Navy