Bowser can refer to:

• Bowser, British Columbia, an unincorporated community on Vancouver Island
• Bowser and Blue
• Bowser and Blitz from C.O.P.S.
• Bowser (character), the main villain in the Mario series of video games
• Bowser (tanker), a generic name for a tanker of various kinds
• A fuel dispenser
• Bowser Manufacturing, a manufacturer of model railroad items
• Boomer and Bowser, one of the two mascots owned by the Indiana Pacers
• A component of Microsoft Windows operating systems
• Jon Bauman, singer formerly of Sha Na Na who goes by the stage name of "Bowzer"

Bowser is the surname of:

• John Bowser (1856-1936), an Australian politician
• Jonathon Earl Bowser, a Canadian artist
• Mary Bowser, American freed slave who worked as a Union spy during the American Civil War
• Ryan Bowser, a music producer
• Sylvanus Bowser, an American inventor
• William John Bowser (1867-1933), a Canadian politician

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