The Kalundborg refinery in Denmark is owned by Statoil Refining Denmark A/S. It is Denmark's largest oil refinery, processing about 5.5 million tonnes of crude oil and condensate per year. The plant has a tank capacity of some 800 million litres.

Statoil purchased the refinery from Dansk Esso A/S in 1986.

The oldest parts of the refinery were put into use in 1961, and the plant has been gradually developed since then. In 1995 a condensate distillation plant was added, enabling the refinery to receive a large amount of condensate, a light crude. It was thus possible to produce petrol with a lower content of the carcinogenic substance benzene.

In 1997 the Kalundborg refinery started delivering petrol with only one percent benzene to the Danish market. Today the refinery also delivers petrol and diesel with only 0.001 % sulphur.

Statoil Refining Denmark A/S produces gas, naphtha, petrol, jet fuel, diesel, fuel oil and heavy fuel, and the primary market besides the Danish is Scandinavia and North-West Europe.

The refinery mainly processes various crude oils and condensate from the Norwegian continental shelf, but also receives crudes, e.g., from the Middle East.

All crude oil and condensate are transported to Kalundborg by tankers, and most of the completed products are also transported by sea. There are a total of the about 730 shipping arrivals per year, and Statoil Refining Denmark A/S therefore has a harbour at its disposal in connection with the plant.