Brian Stewart McKenzie (born March 16, 1951) is a Canadian former professional ice hockey player. He played 6 games in the National Hockey League with the Pittsburgh Penguins during the 1971–72 season and 87 games in the World Hockey Association with the Edmonton Oilers and Indianapolis Racers during the 1973–74 and 1974–75 seasons.

McKenzie was drafted 18th overall by the Pittsburgh Penguins in the 1971 NHL Amateur Draft and played six games for the Penguins during the 1971–72 season. He also played in the World Hockey Association for the Edmonton Oilers and the Indianapolis Racers.

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