Robert Mansel (– after March 1219) was Constable of Antioch (1207–1219).
Robert Mansel belonged to the important Frankish Mansel family from Antioch. He was a son of Sibylla from her first marriage, who later married Prince Bohemond III of Antioch in her third marriage. On May 22, 1207, he was first documented as a constable of Antioch.
He married a sister of Constantine of Baberon, with whom he had two sons:
He was last documented in March 1219.