Marques D. Sullivan (born February 2, 1978) is an American former professional football offensive lineman for the Buffalo Bills, New York Giants, New England Patriots and Chicago Rush.
In 1995, Sullivan was one of the top three offensive lineman in the country, achieving All-American and All-State honors and helping the Friars reach a 12-1 record.
Sullivan started 25 games for the Bills during the 2002 and 2003 seasons, blocking for Pro Bowlers Travis Henry and Drew Bledsoe.
He served as the Director of the Chicago NFL Alumni Football Camp, coaching high school aged children.
On July 10, 2008 North Park University announced that Sullivan would be the football team's new offensive line coach.