The master's thesis titled Foreign Languages and Croatian Translators in the Editions of Biblioteka Vjeverica examines the major role of foreign languages and Croatian translators in the context of Biblioteka Vjeverica, one of the most significant publishing series in the history of Croatian children's literature. The thesis focuses on the quality of translations and the selection of translators who contributed to the enrichment of Croatian children's literature. The introduction gives a historical overview of the publisher Biblioteka Vjeverica with a special emphasis on the work of its editors Grigor Vitez, Ana Kulušić and Vera Barić. The following chapters analize the impact of the Biblioteka on Croatian children's literature, the significance of translated works and the process of translation itself. A detailed analysis of Croatian translations before and during editions of Biblioteka Vjeverica show a dominance of the German language and translators such as Grigor Vitez, Josip Tabak, Anđelka Martić and Gustav Krklec. The conclusion of this thesis emphasises the importance of understanding the role of foreign languages and translators in the cultural enrichment of Croatian children's literature.