A buzzer is a signalling device.

Buzzer or The Buzzer may also refer to: Buzzer (whirligig), an ancient mechanical device used for ceremonial purposes and as a toy Buzzer (internet), an Indonesian term to refer to influence operators Buzzer (G.I. Joe), a fictional character in the G.I. Joe universe The Buzzer, nickname for radio station UVB-76 Buzzer beater, basketball term Haufe Buzzer 2, motorglider Buzzr, an American digital multicast television network Jointer, A woodworking machine used to produce a flat surface along a board's length.