The thesis includes the analysis of the fideicommissum institute, which is one of the elements of the Czech Inheritance Law that were reintroduced into the new Czech Civil Code, which came into effect on the 1st of Janurary 2014. The theme is highly actual due to the new important possibilities of expressing the will of the testator for the occasion of his death. The thesis is focused on the analysis of the current enactment and describes the historic development of the fideicommissum institute The text contains four fundamental parts. The first presents the fideicommissum institute and its role and development in the Inheritance Law from the time of Roman Law. The author deals in this chapter with the intertemporal provisions and other coh...