The article is devoted to the 100th anniversary of the birthday of the doctor of philological sciences, professor Dmytro Kharytonovych Barannyk (December 15, 1923 — January 30, 2009). The works of D. H. Barannyk are a significant contribution to the Ukrainian language studies. And such issues as the systematization of functional-stylistic varieties of monologue, the determination of typological features of the language structure and intonation of a number of functional varieties of oral monologue, were first covered in D. Kh. Barannyk’s work «Oral monologue». The high authority of D. H. Barannyk in Ukrainian linguistic science is proven by the fact that he was a member of the bureau of the Ukrainian Committee of Slavists, a member of the republican Scientific Problem Council, of several scientific publications editorial boards, in particular the journal «Movoznavstvo», the interdepartmental collection «Ukrainian Linguistics» (Kyiv) and others. D. Kh. Barannyk was a member of the Ukrainian National Commission on Spelling under the Cabinet of Ministers of Ukraine. Participant of the X International Congress of Linguists (Bucharest, 1967), IX and XI International Congresses of Slavists (Kyiv, 1983; Bratislava, 1993). Dmytro Kharytonovych educated a whole constellation of Ukrainian linguists — more than thirty. The scientific legacy of Professor D. Kh. Barannyk served as a foundation and model for young language researchers. The interest in his works is not accidental, because they are characterized by high quality, concentration on key problems, major directions of linguistic science, the clarification of which is especially important for understanding the specifics of the development of the Ukrainian language at the current stage.