Thinner

Thinner may refer to:
 * Paint thinner, a diluent or solvent used in painting and decorating, for thinning oil-based paint and cleaning brushes.
 * Thinner (novel), a 1984 horror novel by Stephen King, written as Richard Bachman
 * Thinner (film), a 1996 horror film based on the novel by Stephen King
 * Thinner (netlabel), a German netlabel releasing electronic music