Hugh Duffy (1 April 1934 – 30 December 2017) was a Scottish rugby union and professional rugby league footballer who played in the 1950s and 1960s. He played representative level rugby union (RU) for Scotland, making his début in a five nations international match against France in Paris, and at club level for Jed Thistle, and Jed-Forest RFC, as a Flanker, i.e. number 6 or 7, and club level rugby league (RL) for Salford and Halifax (Heritage No. 722), as a forward. Duffy was one of the first XV Scottish rugby union internationals to move to rugby league.