The Irving Oil Refinery is a Canadian oil refinery located in Saint John, New Brunswick. It is currently the largest oil refinery in Canada, capable of processing more than 320,000 barrels (51,000 m3) of crude oil per day. Over 80 per cent of the production is exported to the United States, accounting for 19 per cent of the country's gasoline imports and 75 per cent of Canada's gasoline exports to the US.

Saint John is a seaport city located on the Bay of Fundy in the province of New Brunswick, Canada. It is Canada's oldest incorporated city, established by royal charter on May 18, 1785, during the reign of George III. The port is Canada's third-largest by tonnage with a cargo base that includes dry and liquid bulk, break bulk, containers, and cruise. The city was the most populous in New Brunswick until the 2016 census, when it was overtaken by Moncton. It is currently the second-largest city in the province, with a population of 69,895 over an area of 315.59 km2 (121.85 sq mi).