The collection contains articles by Russian and foreign authors of various scientific specializations (ethnographers, historians, sociolinguists, dialectologists, ethnolinguists, folklorists) devoted to the problems of language, folk culture, ethno-confessional relations, identity and folklore of Muslim Slavs who live in different regions of the Balkan Peninsula. The totality of the articles collected in this book makes it possible to form a comprehensive impression of different groups of Slavs of Muslims in the Balkans.