The heraldic mark of the prime minister of Canada is granted to holders of the office who pursue an official personal coat of arms from the Canadian Heraldic Authority.
Presently, eight former prime ministers have official coats of arms featuring the mark, including: Joe Clark, Pierre Trudeau, John Turner, Brian Mulroney, Kim Campbell, Jean Chrétien, and Paul Martin.
Following his fatherâÂÂs death in 2000, Justin Trudeau inherited Pierre TrudeauâÂÂs coat of arms, and is consequently the eighth former Canadian prime minister to possess arms featuring the heraldic mark. Three children of Paul Martin were also granted differenced versions of their fatherâÂÂs arms, all of which continue to feature the prime ministerâÂÂs mark, thus demonstrating its heritable nature.
Prime ministers John A. Macdonald and Charles Tupper both had personal coats of arms, however neither feature the heraldic mark because the symbol had not been adopted during their tenure.