'Rotary' can refer to:
★
Rotary engine, a type of internal combustion engine from the early 20th century
★
Rotary Woofer, a type of loudspeaker capable of very low frequency sound
★
Rotary International, a service organization
★
Rotary milking shed
★
Rotary dial, a rotating telephone dial
★
Roundabout, a road junction at which traffic streams around a central island
★ An abbreviation for
Rotary tiller