The article discusses the reflection of the features of the own — alien dichotomy in the Balkan model of the world in the xenologic pejorative vocabulary of the Balkan sprachbund languages: Albanian, Aromanian, Bulgarian, Modern Greek, Macedonian, Romanian and Serbo-Croatian. The author gives a brief review of the historical, cultural and geopolitical specifics of the Balkan-Carpathian region, which influenced the local peoples’ ideas about strangers; some traditional mythological beliefs of the Balkanians related to the conceptual field of otherness are also presented. Based on the analysis of the internal history of the word, an attempt is made to define the main models for constructing derogatory names for strangers in order to compare the data for various Balkan languages and, to the extent possible, build an integral image of the concept of alien in the Balkan conceptual worldview. According to the results of the study, the xenopejorative vocabulary of languages of the Balkan sprachbund shows significant similarities both in terms of form and content. Pejoratives with undifferentiated evaluativity absolutely predominate, which could account for the richness of the Balkan derivational morphology and a large number of lexical borrowings in each of the languages; pejoratives with an indication of appearance, features of language and peculiarities of behavior are also widely represented, however, the first are referentially limited, while the second and the third are universal, from which it is concluded that the prototypical Balkan alien is someone who speaks differently and behaves differently. At the same time, the most common target for pejorative vocabulary in the Balkan languages among all strangers is Roma people, which is bound both to a number of stereotyped ideas about the physical and behavioral distinctive features of this ethnic group, and to the historical isolation caused by the nomadic way of life and the closedness of the Roma community from outsiders.