Ținutul Jiu (or Ținutul Olt) was one of the ten Romanian "ținuturi" ("lands") founded in 1938, after King Carol II initiated an institutional reform by modifying the 1923 Constitution and the law of territorial administration. Roughly corresponding to the historical region of Oltenia and named after the Jiu River and the Olt River, it had its capital in the city of Craiova. "Ținutul Jiu" ceased to exist following the territorial losses of Romania to the Axis powers and the king's abdication in 1940.