The Organization of Ukrainian Nationalists (OUN) (Ukrainian: Організація Українських Націоналістів (ОУН), Orhanizatsiya Ukrayins'kykh Natsionalistiv) was an Ukrainian-nationalist political organization established in 1929 in Vienna. The organization first operated in Eastern Galicia (then part of interwar Poland). It emerged as a union between the Ukrainian Military Organization, smaller radical right-wing groups, and right-wing Ukrainian nationalists and intellectuals represented by Dmytro Dontsov, Yevhen Konovalets, Mykola Stsyborsky and other figures.[2][nb 1]