Joel Norman Quenneville (born September 15, 1958 in Windsor, Ontario) is the head coach of the Chicago Blackhawks professional ice hockey team. He is a former ice hockey defenseman and former head coach of the Colorado Avalanche and St. Louis Blues. He is known affectionately by fans and players as "Coach Q."
As a player, Quenneville was drafted 21st overall by the Toronto Maple Leafs in the 1978 NHL Entry Draft. He has played for the OHA Windsor Spitfires, AHL New Brunswick Hawks, Toronto Maple Leafs, Colorado Rockies, New Jersey Devils, Hartford Whalers, AHL Baltimore Skipjacks, Washington Capitals and AHL St. John's Maple Leafs. He has also been a player/assistant coach for St. John's, head coach for the AHL Springfield Indians, and assistant coach for the Quebec Nordiques and Colorado Avalanche. He won the Jack Adams Award with the Blues in the 1999–2000 NHL season.
Quenneville won the Stanley Cup as an assistant coach with the Avalanche in 1996. He then moved to the Blues franchise, becoming head coach midway through the next season after Mike Keenan was fired. He led St. Louis to 7 straight playoff berths. In Quenneville's 8th season with the Blues, the team started poorly. Late in the year, St. Louis was in danger of missing the playoffs for the first time in a quarter century. As a result, Quenneville was fired.