Countess Granville is a title that has been held by a number of women, either in their own right or as wife of Earl Granville. They include:
Countess in her own right Grace Carteret, 1st Countess Granville (c.1667–1744)
Countesses through marriage Harriet Leveson-Gower, Countess Granville (1785-1862) Rose Leveson-Gower, Countess Granville (1890-1967)