Leath is a surname. Notable people with the surname include:
Marvin Leath (1931–2000), American politician from Texas Raynella Leath (1948–2026), former life prisoner in America Steven Leath (born 1957), American academic administrator Vaughn De Leath (1894–1943), American singer with stage name adapted from her surname Vonderlieth
Other uses of the name Leath Correctional Institution, South Carolina Porter-Leath, non-profit organisation in Memphis, Tennessee Porter-Leath House, historic house in Memphis
See also Leath Cuinn and Leath Moga, legendary divisions of Ireland