The United Refining Company (URC) is an oil company in Warren, Pennsylvania. The company operates an oil refinery in Warren that can process 70,000 barrels of oil into gasoline, diesel fuel and other petroleum distillates per day. It distributes gasoline under the Kwik Fill and Keystone brands. In early 2019, the American Automobile Association noted that Warren had the most expensive gasoline in Western Pennsylvania, despite the presence of the refinery in the town and a gasoline station just outside the refinery, the root cause of which remains undetermined.