The Article deals with the criminalization of homosexuality after the disintegration of AustroHungarian Empire, an important European power unit, in its successor state – the Czechoslovak Republic. It describes the transformation of the legislation of criminalization of homosexuality after the dissolution of the constitutional dualistic monarchy and the creation of a new democratic republic on its territory. It captures the impacts of the newly-formed state on the position of homosexual minority society and its legal forms of persecution. It monitors the European parallels and differences in the disintegration of the state entities and the subsequent access to criminalization of homosexuality in their new state entities and units in the same historical period.