Man o' War was a thoroughbred racehorse considered an all-time great.

Man o' War (or capitalization variations thereof) may also refer to:

• Portuguese man o' war, a floating marine animal found in the Atlantic that resembles a jellyfish
• Man o' war, alternate name for the magnificent frigatebird
• Man-of-war fish, a driftfish known for living in the tentacles of the Portuguese man o' war.

• Man O' War Bay (disambiguation)
• Man-O-War Cay, an island in the Bahamas

• Man-of-war (aka Man o' war), a heavily armed warship from the 16th to the 19th centuries
• Man-O-War GFC, a Gaelic football club
• Manowar, a heavy metal band
• Man o' War Boulevard, Lexington, Kentucky, U.S.
• Man o' War, a former Central of Georgia passenger train operating from Atlanta to Columbus, Georgia
• Man O' War (game), a naval wargame by Games Workshop
• Man O' War, a brand of cigar manufactured by A. J. Fernandez Cigars
• Gigabolt Man-O-War, a boss character in the video game Mega Man X8
• Man O' War (paramilitary), voluntary paramilitary organization in Nigeria.

• Justin Credible, former WWF wrestler who went by the name "Aldo Montoya, the Portuguese Man O' War"
• Man of war (disambiguation)
• Men of war (disambiguation)

This disambiguation page lists articles associated with the title Man o' war.
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