A bayonet is a blade fastened to the end of a gun or rifle.

Bayonet may also refer to:

Military HMAS Bayonet (P 101), an Australian naval patrol boat Mossad assassinations following the Munich massacre or Operation Bayonet, a covert operation directed by Israel's Mossad

Other uses Bayonet Constitution, a nickname for the 1887 Constitution of the Kingdom of Hawaii Bayonet lug, a metal feature used to attach a bayonet to a long gun Bayonet mount, an electrical fastening mechanism Lens mount, sometimes as a bayonet type Spanish bayonet (disambiguation), any of several plants in the genus Yucca or Hesperoyucca Operation Bayonet (darknet), multinational law enforcement operation targeting darknet Bayonet (1936 film), a 1936 Italian film Bayonet (2018 film), 2018 Finnish-Mexican film Bayonet (band), an American hardcore punk band Jūkendō, bayonet fighting, a Japanese martial art

See also Bayonetta, a video game series