This thesis paper focuses on conducting an analysis of Anglicisms used in the Croatian language, especially when they are part of political discourse. Throughout the paper, the significance of different research conducted in the field of contact linguistics has been highlighted, especially when it comes to Rudolf Filipović's work, and the work of other Croatian linguists. For this paper, an analysis has been conducted in order to determine the level of adaptation of Anglicisms in Croatian political discourse, and the main focus has been put on analysis and discussion of the orthographic and semantic levels of change. With the help of different sources such as 24 sata, Jutarnji list, Novi list, Indeks.hr and Dnevnik.hr, 55 Anglicisms were chosen for the analysis. In order to provide the best examples of change which may have happened to the English words during the process of adaptation and integration into the Croatian language system, various dictionaries have shown us the meaning of each Anglicism, as well as their etymology. The orthographic analysis is focused on the adaptation of Anglicisms according to pronounciation, orthography, or a combination of both, as well as adaptation under the influence of an intermediary language. The analysis of semantic adaptation of Anglicisms is based on zero semantic extension, restriction in number of meanings and restriction in the semantic field of meaning, as well as expansion in number of meanings and expansion in the semantic field.