Sebastian Paul Costa (born December 7, 1941 in Port Chester, New York) is a retired American football tight end. He played college football for the University of Notre Dame's Fighting Irish. The American Football League's Kansas City Chiefs drafted him in his junior year, 1964, and was traded to the AFL's Buffalo Bills for the 1965season. He won a starting job at tight end his rookie year with the Bills, and soon became an excellent tight end, being named an AFL All-Star in his first two seasons.