Father Robert Molyneux, S.J. (died 1808) was the second and fifth Presidents of Georgetown University.
Molyneux was born in England. So far as is known, he was one of the first to edit a catechism in America. He was a priest among the Catholics in Maryland and Pennsylvania.
Molyneux, became the first superior of the restored the Society of Jesus in Maryland, and held the presidency of Georgetown University for a second term until his death, in 1808.