Grandval (; meaning great valley in French) may refer to:
People Charles-François Racot de Grandval (1710–84), French actor and playwright Clémence de Grandval (1828–1907), French composer Randoald of Grandval (died 675), Swiss saint
Places Grandval, Puy-de-Dôme, commune in Puy-de-Dôme, France Grandval, Switzerland, municipality in Berne, Switzerland Lac de Grandval, lake in Cantal, France