Joseph Daniel Mario Tremblay (born September 2, 1956) is a former professional ice hockey player and former coach in the National Hockey League (NHL). As a player, he was a five-time Stanley Cup winner with the Montreal Canadiens.

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He was honoured by his hometown of Alma, which named its local arena "Le Centre Mario-Tremblay".^{[citation needed]} Since 1981, Tremblay has owned the sports bar in his hometown called "Bar-Restaurant chez Mario Tremblay".^{[citation needed]}

Tremblay, nicknamed "Le bleuet bionique" (The Bionic Blueberry), played his junior hockey with the Montreal Bleu Blanc Rouge and played with the Montreal Canadiens for his entire NHL playing career (1974–1986), winning five Stanley Cup championships with the team as a player in 1976, 1977, 1978, 1979, and 1986. In 852 regular season games in the NHL, he scored 258 goals and added 326 assists for 584 points, with 1043 penalty minutes. He scored the winning goal in game six of the 1978 Stanley Cup finals, giving the cup to the Canadiens. He was the winner of the Molson Cup for the 1982-83 season. Tremblay is 10th on the Montreal Canadiens all-time list for plus-minus at 184. Tremblay remains the youngest goal scorer in franchise history, having achieved his inaugural tally at age 18 years, 75 days on November 16, 1974, against the New York Rangers at the Forum.^[1]

In his first few seasons with the Canadiens, he was part of a very dynamic forward line alongside center Doug Risebrough (who was also a rookie in 1974-75) and LW Yvon Lambert. Their job was to contain their opponents' main scoring line and to create room for the team's highly skilled players by agitating and pestering their opponents' best players. When the three began playing together a few weeks into the 1974-75 season, they lit a fire under a team that had started the year slowly, winning just 3 of its first 10 games. All three were regular visitors to the penalty box during those years. The line was together for all four Stanley Cup wins from 1976 to 1979. In later years, Tremblay was given more goal-scoring responsibilities and was a regular on the power play. He scored 30 or more goals in four different seasons, the first time in 1978-79, his fifth season in the league.

He announced his retirement in September 1986, after suffering a serious shoulder injury the previous season.^[2]

Mario is the uncle of the professional hockey player, Pascal Trépanier.