Rotary may refer to:
Science, engineering and technology Rotary motion Rotary dial, a rotating telephone dial Rotary engine (disambiguation), multiple types of engines called "rotary" Rotary latch Rotary milking shed, a type of milking shed used in the dairy industry Rotary snowplow, one type of railroad snowplow used especially for deep snow removal Rotary system, a type of pre-electronic telephone switch Rotary table (drilling rig), a device used to apply directional force to a drill string Rotary tiller, a motorised cultivator Rotary woofer, a type of loudspeaker capable of producing very low frequency sound Rotary wing aircraft
Organisations and enterprises Rotary International, or Rotary Club, an international service organization founded in the United States Rotary Foundation, non-profit foundation of Rotary International Rotary Scholarships, scholarships offered by the organization Rotary Jaipur Limb Project, a U.K. charity which provides prosthetic limbs to amputees in India and several African countries Rotary Watches, a Swiss watchmaker
Other uses Rotary (intersection) or roundabout, a circular roadway intersection "The Rotary", a song by Andy Partridge from Take Away / The Lure of Salvage