Mackenzie Boyd-Clowes (born July 13, 1991 in Toronto) is a Canadian ski jumper who has competed internationally since 2004. At the 2010 Winter Olympics in Vancouver, he finished 12th in the team large hill, 44th in the individual normal hill, and 45th in the individual large hill events. His best World Cup finish was 13th in the individual large hill event in Courchevel, France in August 2011 - the best result for a Canadian ski jumper since Horst Bulau's results in 1991. His best Continental Cup finish was a 2nd in Courchevel in July 2011. He has won 3 FIS Cups.
Mackenzie was raised in Calgary, Alberta where he trained on the ski jumps at Canada Olympic Park.