Stuart McNay (born August 1, 1981 in Boston, Massachusetts) is an American sailor, who specialized in two-person dinghy (470) class.

[1][3] As of September 2014, McNay/Biehl were ranked sixth in the world for two-person dinghy class by the International Sailing Federation, following their successes at the North American Championships and ISAF Sailing World Cup Series in Miami, Florida, United States.

[4] At the 2008 Olympic Games, McNay/Biehl finished thirteenth, edging out Israel's Gideon Kliger and Udi Gal.

[5][6] At the 2012 Summer Olympics in London, McNay competed for the second time as a helmsman in the men's 470 class by finishing thirteenth and receiving a berth from the ISAF World Championships in Perth, Western Australia.

[12] McNay will compete in the 2024 Olympic Games in Marseille, France, in the mixed 470 class with Lara Dallman-Weiss.