The United States primarily imports oil from Canada, making it the country's largest supplier.

Canada is the leading supplier of oil to the United States, contributing around half of the total oil imports annually. Due to its proximity, stable political relationship, and extensive oil reserves—particularly in Alberta’s oil sands—Canada has become a reliable and cost-effective source of oil for the U.S. Compared to other major oil exporters, Canadian oil faces fewer geopolitical risks, reducing supply chain disruptions. The vast pipelines between the two countries further enhance transportation efficiency. This strong energy partnership helps the U.S. maintain a steady supply of crude oil, supporting both economic stability and energy security.