Polmin (English: State Factory of Mineral Oils, Polish: Państwowa Fabryka Olejów Mineralnych) was a Polish state-owned enterprise, which controlled excavation, transport and distribution of natural gas. Founded in 1909, it was nationalized in 1927, with main office in Lwow. Polmin operated a large oil refinery in Drohobych, which in late 1930s employed around 3000 people. The refinery purified oil extracted from rich fields of southern part of the Second Polish Republic (Gorlice, Boryslaw, Jasło, and Drohobych). Some Polish-language sources claim that Polmin refinery in Drohobycz was in late 1930s the biggest in Europe.