Robert Robertson was a Scottish footballer whose only club at the professional level was St Mirren, where he spent eleven seasons (all in the Scottish Football League's top division), making 296 appearances for the Buddies in the two major competitions and scoring 18 goals. His position was mainly as a centre half, although early in his career he was an inside forward before displacing the established 'pivot' Walter Bruce; he took part in the 1903 Glasgow Merchants Charity Cup final and the 1908 Scottish Cup Final, both of which St Mirren lost heavily to Celtic (5–2 and 5–1 respectively).