Procor is a Canadian company producing railway shipping cars. It is Canada's largest private rail car rental fleet, with more than 30,000 conventional and special-purpose tank and freight cars.

Linked to Sparling Tank Car of Toronto, Procor was founded in 1952 as Products Tank Line Limited and became an affiliate of US-based Union Tank Car Company. The company, which shortened its name to Procor in 1962, is headquartered in Oakville, Ontario.

Procor manufactured cars in its Oakville shops until 2002, but now sources from parent Union Tank Car's plant in Alexandria, Louisiana and Sheldon, Texas.

List of cars once manufactured by Procor:

Procor operates from numerous locations across Canada.