Ronald Michael Glavin (born 27 March 1951) is a Scottish former footballer, who played as a midfielder. Glavin played for Partick Thistle, Celtic, Barnsley, Belenenses, Barnsley, Farsley Celtic, Stockport County, Cowdenbeath and St. Louis Steamers. He represented Scotland once, in 1977. After retiring as a player, Glavin managed clubs in English non-league football. His younger brother Tony was also a footballer.