Before his coaching years, Boucher played right wing with the McGill Redmen between 1991 and 1995. He graduated with an arts degree (history and environmental biology) in 1995 and an engineering degree (agricultural engineering) in 1996. He also holds a master's in sports psychology at the University of Montreal. In 1995–96, Boucher played in France for Viry-Essonne where he scored 16 goals and 38 points in 27 games.
On June 29, 2009, he was named head coach of the Montreal Canadiens's affiliate Hamilton Bulldogs in the AHL becoming the eighth head coach in Bulldogs franchise history.[2] He led the team to an impressive 52–17–11 record for 115 points despite having many of his best players being called up by the Montreal Canadiens. At the end of the season, he won the Louis A. R. Pieri Memorial Award as coach of the year.[3]
In 2010, Boucher was offered the vacant head coaching position for the Columbus Blue Jackets,[4] but turned it down to accept the head coaching position with the Tampa Bay Lightning.[5] He developed a "1-3-1" defensive system at Tampa that led to a famous incident against the Philadelphia Flyers where the Flyers held back the puck in their defensive zone, refusing to advance, while the Lightning team waited and did not attack the puck carrier, leading to several minutes of no action.[6] In his rookie year as an NHL head coach, Boucher led the Tampa Bay Lightning to game seven of the Eastern Conference Final. On March 24, 2013, the team's general manager Steve Yzerman fired Boucher following a 5–3 loss against the Ottawa Senators.[7] At the time, Tampa Bay was in 14th place in the Eastern Conference.
On January 27, 2014, the Swiss ice hockey club SC Bern announced the signing of Guy Boucher as their head coach.[8] Boucher guided the team to the title in the 2014–15 Swiss Cup competition. On November 18, 2015, Boucher was fired by SC Bern following a four-game losing streak and a ninth-place finish in the NLA.[9]
On May 8, 2016, Boucher signed a three-year contract to become the head coach of the Ottawa Senators.[10] With his hire, Boucher is the first person to coach both franchises from the 1992 expansion class. In his first season, the club advanced to the Eastern Conference Final, losing in double overtime in game seven to the Pittsburgh Penguins. In his second season, the team's performance nose-dived and it placed 30th out of 31 teams in the NHL. On March 1, 2019, with the Senators in 31st place, Boucher was fired and associate coach Marc Crawford named as interim head coach.[11]
On July 20, 2023, the Toronto Maple Leafs announced Boucher was signed to be an assistant coach for the 2023–24 season.[12]
On June 15, 2024, the Maple Leafs announced that Boucher won't return to the coaching staff for the 2024-25 season.[13]
On November 27, 2024, Boucher signed a contract as a head coach of Russian team Avangard Omsk of KHL until the end of the 2025–26 season.[14]
Guy Boucher was married to Marsha and the couple have three children together.[16] Boucher has a prominent scar on his right cheek. When asked how he received it, Boucher said "it is not hockey-related. I did not tell anybody back home, so it is like this little enigma. My kids do not even know."[17] Guy Boucher's scar is often compared to the "Le Chiffre" character's scar in Casino Royale and Boucher is sometimes referred to as a "James Bond villain".[18][19] He was spoofed as such on-air by Jay Onrait of the Canadian TSN sports television channel.[20]
^Star Staff (June 30, 2009). "Penguins Sign Guerin for another year"(PDF). Toronto Star. TorStar Corporation. Star Wire Services. p. S5. Retrieved July 20, 2023 – via ProQuest.