A leotard is a skin-tight one-piece garment that covers the torso and body but leaves the legs free. It was made famous by the French acrobatic performer Jules Léotard (1839–1870), about whom the song "The Daring Young Man on the Flying Trapeze" was written.

Leotards are worn by acrobats, gymnasts, dancers, thespians, and circus performers both as practice garments and performance costumes. They are often worn together with tights. There are sleeveless, short-sleeved and long-sleeved leotards. A variation is the unitard, which also covers the legs.