Robert C. Marshall (September 18, 1888 – ?) was an American football and basketball coach and college athletics administrator. He served as the head football coach at the University of Richmond in 1918, Randolph–Macon College in 1919, and Howard College—now known as Samford University—in 1920 and 1921, compiling a career college football record of 10–19–2. Marshall was also the head basketball coach at Richmond for one season, in 1918–19, and at Howard for two seasons, from 1920 to 1922, compiling a career college basketball record of 7–19.