Robert Rudolph Marquis (December 23, 1924 – December 28, 2007) was an American professional baseball player and outfielder whose eight-year career (1947–1954) included a stint with the Cincinnati Redlegs of Major League Baseball in its 1953 season. A native of Oklahoma City, Oklahoma, Marquis batted and threw left-handed. He stood 6 feet 1 inch (1.85 m) tall and weighed 170 pounds (77 kg). Marquis died in 2007 in Beaumont, Texas, at the age of 83. He was interred at Forest Lawn Memorial Park in Beaumont.