Jean Costantino (born 28 September 1944) is a French former international rugby union player.
A product of US Montauban, Costantino joined AS Montferrand in 1972 and the following year gained his only France cap, packing the front row of the scrum in a FIRA Trophy match against Romania at Valence d'Agen. He was later part of the French squad as a reserve hooker on the 1975 tour of South Africa.
Costantino was employed outside of rugby as an EDF agent.