Rosignano Solvay is a frazione (detached borough) of Rosignano Marittimo, Tuscany, Italy, located some 25 km from Livorno.
It houses the White Beaches (Italian: Spiagge bianche), whose sand is formed by limestone (90%) and Calcium chloride (10%) produced by the nearby Solvay since 1914.
Sights include the Teatro Solvay, two Etruscan museums and the Villaggio Solvay residential complex.
Coordinates: 43°23′N 10°26′E / 43.383°N 10.433°E