St. Marys Cemetery is a cemetery located in St. Marys, Ontario.

It is most notable for being the burial place of Canadian Prime Minister Arthur Meighen (1874–1960).

[1] Opened in 1885 to relieve the full Protestant Cemetery, it is the resting place for Protestants in the area.

A few plots were relocated to this cemetery from the old, which has since become a park.

Other notables buried here: