Suncor Energy Inc. (TSX: SU, NYSE: SU) is a Canadian integrated energy company, based in Calgary, Alberta. It has specialized on production of synthetic crude from oil sands. Suncor ranks number 254 on the Forbes Global 2000 list.[2]

Suncor markets products and services to retail customers in Ontario through a network of more than 280 Sunoco-branded retail sites, as well as more than 200 customer-operated retail and diesel sites. In addition, it sells oil products under Petro-Canada brand. Suncor also markets through a retail network of Phillips 66-branded outlets throughout Colorado.