Colin John Campbell (born January 28, 1953 in London, Ontario), nicknamed "Sheriff", is a former professional ice hockey defenceman, coach and the former Senior Vice President and current Director of Hockey Operations for the National Hockey League. On June 1, 2011 he stepped down based on ethical reasons (his son Gregory Campbell's team the Boston Bruins made it to the Stanley Cup Finals) from his role as the NHL's principal disciplinarian.