Sleath is a surname. Notable people by that name include:
Danny Sleath (born 1986), English footballer David Sleath, chief executive of SEGRO plc Eleanor Sleath (1770–1847), English novelist Gabriel Sleath (1674–1756), London gold- and silversmith John Sleath (1767–1847), English cleric, High Master of St Paul's School, London Richard Sleath (1863–1922), Australian politician William Boultbee Sleath (c. 1763–1843), English teacher and clergyman
See also Sleath Farmhouse, Llangua, Monmouthshire, a 16th-century farmhouse