Wagar High School was a high school at 5785 Parkhaven Avenue in Côte Saint-Luc, Quebec, Canada. It opened its doors in 1963 as part of the Protestant School Board of Greater Montreal (PSBGM) and closed in 2005 as part of the English Montreal School Board (EMSB). At its peak in the mid-70s, Wagar's population topped out at over 1,700 students, despite its having been built to accommodate 1,100. The school was named after Roy Wagar, a school board official. Wagar died during his speech at Monkland High School's graduation ceremony just a year before Wagar High School opened its doors.