 On November 24, 1918, as part of Syrmia region, the village became part of the Kingdom of Serbia, and on December 1, it became part of the newly formed Kingdom of Serbs, Croats and Slovenes (future Yugoslavia).From 1918 to 1922, the village was part of the Syrmia County and from 1922 to 1929 part of the Syrmia Oblast.Bežanija became part of the wider Belgrade area for the first time in 1929 after coup d'état conducted by the king Alexander I of Yugoslavia, who, among other things, draw a new map of Yugoslavia's administrative division creating a new administrative unit "Uprava grada Beograda" or "Administration of the City of Belgrade" which comprised Belgrade, Zemun (with Bežanija) and Pančevo.