A boatswain's mate is a petty officer assisting the boatswain aboard ship. Specifically, boatswain's mate may refer to: * Boatswain's mate (United States Navy), a job classification in the United States Navy * Boatswain's mate (United States Coast Guard), a job classification in the United States Coast Guard * Boatswain's mate (National Oceanic and Atmospheric Administration), a job classification in the United States National Oceanic and Atmospheric Administration *'' Bootsmannsmaat'', a historical naval rank in Austria, Germany, and Russia *'' The Boatswain's Mate'', a 1914 one-act opera by Ethel Smyth

See also