Roger Julian Marquis (April 5, 1937 – July 19, 2004) was an American professional baseball player who appeared in one Major League Baseball game and registered one at bat with the 1955 Baltimore Orioles. The native of Holyoke, Massachusetts, threw and batted left-handed, stood 6 feet (1.8 m) tall and weighed 190 pounds (86 kg). He died at 67 in Holyoke in 2004.