Maersk Oil was a Danish oil and gas company that operated as a subsidiary of the A.P. Moller - Maersk group, which has a rich history dating back to 1904 in shipping and industrial activities. Established in 1962, Maersk Oil focused on offshore oil and gas exploration and production, primarily in the North Sea region. The company developed and operated oil fields, contributing to energy supply with a strong emphasis on national interests.

The company specialized in the exploration and production of crude oil and natural gas from offshore fields. Its customers typically included refineries, petrochemical companies, energy markets, and utilities that required natural gas. Maersk Oil's operations were a strategic extension of the Maersk family's industrial ventures, reflecting a commitment to energy development in Denmark and beyond.