Abstract Oil and gas activities in Romania cover a long time interval from antiquity until the present day. Most importantly, the year 1857 represents the starting point for industrial production in Romania when three world oil firsts were achieved: the first country with a crude oil production formally recorded in domestic and international statistics (275 tons); the first petroleum industrial refinery, located in Ploiești, with a processing capacity of 7.5 tons/day; Bucharest became the first city in the world to have public illumination, using lamp oils. After 1857, the evolution of the oil and gas industry in Romania was controlled by important historical events: World Wars I and II, the communist regime (1945–89), and the post-communist period (1990–today).