ENThe article examines the concept of resistance in the political thought of the Grand Duchy of Lithuania and the Kingdom of Poland during the second half of the sixteenth and early seventeenth centuries. Based on the analysis of political texts from this period, the author examines these writings to explore whether there were differences in the understanding and interpretation of the right of resistance within the intellectual culture of both parts of the Polish-Lithuanian Commonwealth, on the eve of and in the first decades following the Union of Lublin. Common in the political thought of the Kingdom of Poland and the Grand Duchy of Lithuania is the practical orientation towards understanding the right of resistance, emphasising the corresponding legal prerogatives of political entities. At the same time, the level of theoretical reflection was higher in the political thought of the Kingdom of Poland. During the period under study, there was an evolution in the thought of the Polish Crown, from recognising the clerical and senatorial elites as the subjects of resistance to the approach proclaiming the entire nobility as the holders of the right of resistance based on the principle of popular sovereignty. In the political thought of the Grand Duchy, there was an awareness of the right of resistance first as a historical tradition and then as a fundamental right.In the intellectual tradition of the Grand Duchy, the right of resistance was more strongly associated with the senatorial elites in the context of the aristocratic conception of the state. However, during the Sandomierz Rokosz, there was a visible tendency to support the right of resistance among broader layers of the nobility, linking this right with attempts to change the state system towards direct democracy. Keywords: Kingdom of Poland, right of resistance, Grand Duchy of Lithuania, power by contract, renunciation of allegiance.