PKN Orlen (Polish: Polski Koncern Naftowy Orlen) (WSE: PKN) is a major Polish oil refiner and petrol retailer. The company is a significant European publicly traded firm with major operations in Poland, Czech Republic, Germany, and the Baltic States. In 2009, it was ranked in the Fortune Global 500 as the world's 31st largest oil company and the world's – więcej...249th largest company overall, and was the only Polish company ranked by Fortune. – zwiń