A lath is a backing material for plaster that is applied to a wood or metal framework as matrix over which stucco or plaster is applied.

Lath may also refer to:

Lath, Rajkot, an Indian village Lath (horse), a British racehorse Lath Branch, a stream in Kansas Lath, early alternative name of the Brahmi script as used in the Edicts of Ashoka

People with the surname Melagne Lath (born 1963), Ivorian sprint canoeist Mukund Lath (1937–2020), Indian scholar and cultural historian Surendra Lath (b. 1949), Indian politician

See also Lathe, a machine tool Lat (disambiguation)