Mario Marois (born December 15, 1957) is a Canadian former ice hockey defenceman.

[1] Marois started his National Hockey League career with the New York Rangers in 1978.

While with the Quebec Nordiques, Marois served as team captain for three years before being traded to the Winnipeg Jets.

He served one season as a player-assistant coach of the Hamilton Canucks of the AHL in 1992–93 before retiring as a player.

This biographical article relating to a Canadian ice hockey defenceman born in the 1950s is a stub.