Submariner may refer to:

  • A sailor who is a crew member of a submarine
  • A baseball pitcher who pitches with an underhand motion
  • Namor the Sub-Mariner, a character appearing in comic books published by Marvel Comics
  • Rolex Submariner, a Rolex diving watch model
  • Submariner (album), a 2003 album by experimental-rock band The Dead Science
  • "Submariner", a song by Helen Marnie from the 2013 album Crystal World