Charles Chapman Grafton SSJE (April 12, 1830 – August 30, 1912) was the second Episcopal Bishop of Fond du Lac, Wisconsin.

With Richard Meux Benson and Simeon Wilberforce O'Neill he co-founded the Society of St. John the Evangelist (SSJE), also known as the Cowley Fathers.

Grafton also helped establish the American Congregation of Saint Benedict; and in 1888 he was a founder of the Sisterhood of the Holy Nativity, along with Mother Ruth Margaret.

In 1900 Grafton was chief consecrator of Reginald Heber Weller as bishop coadjutor of Fond Du Lac.

Patriarch Tikhon of Moscow, then the Russian Orthodox bishop of Alaska, was present, as well as Antoni Kozlowski [pl] of the Polish National Catholic Church.