The article discusses a very important problem of oil production. Oil, recognized as a major source of economic development, is themain energy source of the modern world. Unfortunately, Poland has limited oil reserves. However, the production, which meets onlyabout 4% of the demand, is carried out. Oil deposits in Poland are found in the Carpathians, in the Carpathian Foredeep, in the Polish Lowlands, and in the Polish Exclusive Economic Zone of the Baltic Sea. Initially, deposits in the Carpathians were of the greatesteconomic importance, but these are already depleted to a great extent. Currently, oil deposits in the Polish Lowlands are of the greatesteconomic importance. The largest deposit is BMB (Barnówko-Mostno-Buszewo) near Gorzów Wielkopolski. In total, in Poland oilresources amount to 23 598.46 thousand tons, of which 61.37% accounts for industrial resources (14 482.15 thousand tons). The article presents crude oil resources in Poland by regions, i.e. Polish Lowlands, the Carpathians, the Carpathian Foredeep, and the PolishExclusive Economic Zone The resources were divided into anticipated economic, industrial, undeveloped resources and abandoneddeposits. In addition, the three Polish companies involved in the extraction of oil, namely PGNiG S.A., the LOTOS Group S.A. andORLEN Upstream sp. z o.o., were presented. The locations where exploitation is carried out and the volume of oil production in thelast few years were discussed.