Development of basketball in the territory of former Yugoslavia in the time of II World War remained quite un-researched. Even though it was truly played, with almost same intensity as before the War, for a long time people were silent and wrote very little about it. During the period (1942 – 1945) several sport clubs existed in Belgrade: Sk. 1913, Bask, Bsk, Btk, Bob, Obilić, Sask, Bankarac, Izbeglice (Refugees), Vladan Matics’ club and others who cherished basketball in newly-formed teams. Besides many games, they organised championships and did their best to promote basketball among school youth. Beside Belgrade, basketball was played in other places too: Novi Sad, Subotica, Petrovgrad, Šabac, Kragujevac, Niš, Prizren, Split, Zadar, Dubrovnik, Šibenik, Kotor and other, with different intensity. Most of the games and championships happened during 1942 and 1943. During writing historical method was used (finding of primary historical sources, their analysis, as also finding and analysis of secondary historical sources). Numerous sources made in that time were reviewed and consulted (magazines, newspapers, papers, records, reports, overwrites, etc.) in: archives, libraries, institutes, private archives and museums of sports of former Yugoslavia, as also the sources made afterword.