Irving Oil is a Canadian energy company founded in 1924 by Kenneth "K.C." Irving. As a subsidiary of the Irving Group of Companies, it is one of North America's largest private conglomerates. The company specializes in refining, producing, and exporting gasoline, oil, and natural gas. It operates Canada's largest refinery in Saint John, New Brunswick, and owns Ireland's only refinery in Whitegate, County Cork.

With a network of over 900 fueling locations and distribution terminals across Eastern Canada and New England, Irving Oil also expanded its European presence by acquiring Top Oil in Ireland in 2019. The company offers a variety of products and services, including retail fuel sales, home heating oil supply, and transportation through its fleet of oil tankers. Irving Oil is committed to environmental initiatives and community engagement, having been recognized as one of Canada�s Top 100 Employers multiple times. Its home office in Saint John is LEED certified, showcasing its dedication to sustainability.