A loose cannon is a hazard on the decks of a battleship, figuratively a person acting in a wild and unpredictable manner.
Loose Cannon or Loose Cannons may also refer to:
Film
Loose Cannons (1990 film), an American comedy film
Loose Cannons (2010 film), an Italian comedy film
Music
Loose Cannon, a 2012 mixtape by Cashis
"Loose Cannon" a song by Killing Joke from the 2003 album Killing Joke
"Loose Cannons", a song by Kurupt from the 1999 album Tha Streetz Iz a Mutha
"Loose Cannons", a song by Dr. Dre from the 2015 album Compton
Video games
Jinx, a League of Legends and Arcane character titled "The Loose Cannon" Loose Cannon Studios, a defunct video game developer
Other uses
The Loose Cannon (Jitka Harazimova, born 1975), Czech professional bodybuilder
Loose Cannon, a 2000 novel by Dean Ing
See also
The Loose Canon, a scriptural document of the Church of the Flying Spaghetti Monster