The Companion of the Order of Canada is the highest rank, which was created in 1967. And every prime minister since that year has received that honour after leaving office.
The latest is Stephen Harper, whose appointment was announced in a statement on Governor General Julie Payette's website.
The decision to invite Harper into this exclusive club did not go over well with the climate-justice group Extinction Rebellion Canada.
"His government was dedicated to the suppression of climate science & the promotion of the fossil fuel industry," it tweeted. "He should be on trial for #ecocide not heaped with honours."
Four others received this highest honour, which recognizes "national pre-eminence or international service or achievement":
* James Cameron for his contributions to filmmaking as a writer, producer, and director;
* Former diplomat Raymond Chrétien, whose brother Jean Chrétien was prime minister from 1993 to 2004;
* McDonald's Restaurants of Canada founder and philanthropist George A. Cohon;
* and Nobel Prize–winning physicist Donna Strickland, who's a professor at the University of Waterloo.
Several Vancouver residents were also named to the Order of Canada.
SFU professor emeritus and earthquake researcher John Clague, Rainbow Refugee founder Chris Morrisey, and mathematician, and UBC professor emeritus and statistics expert James Zidek were named as officers of the Order of Canada, which is the second-highest rank and recognizes national service or achievement.
Vancouver residents named as members of the Order of Canada for "outstanding contributions at the local or regional level or in a special field of activity" were:
* former Athletics Canada president, former Olympian, and cookbook author Diane Clement;
* Ebco Industries cofounder Hugo Eppich;
* Century Plaza Hotel & Spa CEO and Pacific Autism Family Network founder Wendy Lisogar-Cocchia;
* UBC civil engineering professor emeritus Donald S. Mavinic for his contributions to environmental engineering science and technology;
* Brian Theodore McGeer for his contributions to aeronautical engineering and unmanned aerial systems;
* and spoken-word artist Sheri-D Wilson.
For a full list of those honoured across Canada, go here.