Camillo Mazzella (10 February 1833 – 26 March 1900) was an Italian Jesuit theologian and cardinal.
He was born at Vitulano, near Benevento, and died in Rome.
Expelled with his order from Italy, he taught theology at Fourvières (Lyon, France), and at Georgetown University, Washington, D.C. He was the founder and one of the first professors at Woodstock theological college, Maryland; then he was called to Rome to teach at the Gregorian University, and later became president of the Academy of Saint Thomas.
Mazzella was prefect of the Congregation of the Index, Congregation of Studies, and Congregation of Rites and Cardinal-Bishop of Palestrina.