A leotard () is a unisex skin-tight one-piece garment that covers the torso from the crotch to the shoulder. The garment was made famous by the French acrobatic performer Jules Léotard (1838–1870). There are sleeveless, short-sleeved, and long-sleeved leotards. A variation is the unitard, which also covers the legs.

Leotards are worn by acrobats, gymnasts, dancers, figure skaters, athletes, actors, wrestlers, and circus performers both as practice garments and performance costumes. They are often worn with ballet skirts on top and tights or sometimes bike shorts as underwear. As a casual garment, a leotard can be worn with a belt; it can also be worn under overalls or short skirts.

Leotards are entered by stepping into the legs and pulling the sleeves over the shoulders. Scoop-necked leotards have wide neck openings and are held in place by the elasticity of the garment. Others are crew necked or polo necked and close at the back of the neck with a zipper or snaps.