Marcel Aubut, OC OQ KC (born January 5, 1948) is a Canadian lawyer, former president of the Canadian Olympic Committee and former president and Chief Executive Officer of the Quebec Nordiques of the National Hockey League (NHL).

[6] He was also instrumental in the defections of Anton, Marian and Peter Šťastný from communist Czechoslovakia to play for the Quebec Nordiques.

"[7] Aubut was president of the Nordiques when the team was sold to an American communications company and moved to Denver in 1995, becoming the Colorado Avalanche.

[10] During his time as President, Aubut greatly raised the profile of Canada's Olympic athletes and expanded the COC's operations, with corresponding increases in revenues and expenditures supporting amateur sport.

He served as a member of the Board of the organizing committee for the 2010 Winter Olympic Games in Vancouver and the 2015 Pan American Games in Toronto, and was appointed to the International Relations Commission of the International Olympic Committee.

On September 25, 2015, the COC received a complaint from a staff member at the Canadian Olympic Foundation alleging sexual harassment by Aubut.

The Foundation, a charitable organization that raises money for Olympic sport, shares office space with the COC in Toronto.

The COC engaged retired Quebec Superior Court justice François Rolland as an independent investigator.