Marine may refer to:

• Marine (military), a member of the military in an infantry or amphibious force under the authority of a navy, or in several cases, of an independent amphibious force
• Marine (ocean), a general term relating to the sea or ocean or to the science of oceanography
• Marine engineering (disambiguation)
• a term for a navy, uncommon in English, but common in other languages
• Merchant marine, or Merchant Navy, a collective term for all of the merchant ships, shipping companies, and merchant mariners, usually of a particular country.
  
  Places
• Marine, Illinois, United States
• Marine City, Michigan, United States
• Marine on St. Croix, Minnesota, United States
  
  Entertainment
• Marine (book), a book about the United States Marine Corps written by Tom Clancy in 1996
• The Marine, a film
• Marine F.C., an English football team from Merseyside
• Space Marine, in science fiction, a soldier who serves aboard a spacecraft and/or who is trained to fight in space or in planetary attacks
• Marine the Raccoon, a character from the Sonic the Hedgehog series of video games 
  
   People named Marine
• Marine (given name)
• David Marine (1888-1976), an American pathologist who tested the use of iodide to prevent goiters in schoolgirls, which led to the iodization of salt
• Jean-Christophe Marine (born in 1968), a Belgian molecular biologist