Robert Arthur "Nasty" Nash (December 16, 1892 – February 1, 1977) was a professional football player who played in the American Professional Football Association (renamed the National Football League in 1922) for the Akron Pros, Buffalo All-Americans, Rochester Jeffersons and the New York Giants. Prior to joining the AFPA, Nash played professionally in the "Ohio League" for the Massillon Tigers. He was considered by sports historians as one of the greatest tackles of his era.