S u m m a r y The goal of this thesis is to analyse the autonomy of the testator's will in the development of the Czech law of inheritance. The text is divided into nine chapters including introduction and conclusion. In the introduction there is defined the subject of the paper. In the first chapter readers may find the definition of the law of inheritance from different points of view and in different meanings. The basic legal principles of the law of inheritance are enumerated and described in respect of the topic. Then there is a brief recapitulation of the sources of the law of inheritance in the area of the present Czech Republic from 1811 until present in the last section of this chapter. All possible ways, how the testator can expre...