Robert "Bob" S. Nicholson (birth unknown – death unknown) was an English professional rugby league footballer who played in the 1930s, 1940s and 1950s. He played at representative level for Great Britain, England and Cumberland, and at club level for Hensingham ARLFC (in Hensingham, Whitehaven), and Huddersfield, as a prop, or second-row, i.e. number 8 or 10, or, 11 or 12, during the era of contested scrums.