This master's thesis deals with the influence of Jan Kollár's Pan-Slavism on the Croatian national revival. The theoretical part of the paper problematizes the modern integration process, characteristic for nations of Central Europe between the 18th and 19th century. The central part of the work presents the life and work of the Czech revivalist Jan Kollár. Close attention is given to Kollár’s essay O literární vzájemnosti, in which Kollár presented the idea of his own version of Pan-Slavism, the so-called “cultural reciprocity” among the Slavs, influencing Ljudevit Gaj, a central figure of the Croatian national revival and the ideological precursor of the so-called Illyrian movement. Using examples of Gaj's revivalist activities, especially Danica ilirska and Kratka osnova horvatsko-slavenskog pravopisaňa, it is shown how Croatian revivalists adopted some of Kollár's ideas of “reciprocity” and incorporated them into the construction of the ideology with which they embarked on the creation of the modern Croatian nation. Practical part of the work starts with the discussion about genesis of Kollár's collection of sonnets Slávy dcera, focusing on Kollár's artistic techniques and oscillation between two poetics, which makes the work elude a definitive literary-historical determination. In the concluding part of the paper, poems from Kollár's Slávy dcera are analyzed in comparison with poems from the collections of poems of Stanko Vraz's Đulabije and Petar Preradović's Pervenci. The results of the analysis indicate that, if we put Croatian pre-revival literary efforts aside, Kollár, through his literary work, primarily influenced the awareness of the importance of spreading the Slavic idea, and consequently, the themes and motifs of Illyrian poets.