Sergio Méndez Arceo (28 October 1907 in Tlalpan – 5 February 1992 in Morelos) was a Mexican Roman Catholic bishop, activist and human rights supporter.
A product of a wealthy family, Méndez Arceo's father was a successful lawyer and his uncle was a prominent archbishop believed to be involved in the church-state conflict of the 1920s.
Méndez Arceo graduated from the Pontifical Gregorian University of Rome and served as a Seminary professor in Mexico.
He became Roman Catholic Bishop of Cuernavaca, Morelos, in 1953 and served in that capacity until 1983.