The article presents the life and professional career of Corresponding Member of the National Academy of Medical Sciences of Ukraine, Professor Mykola Leonidovych Aryaiev, on the occasion of his 75th anniversary. It highlights his contribution to the development of pediatrics and neonatology, his scientific and organizational activities, his role in medical personnel training, and his influence on the formation of modern approaches to child healthcare. The article outlines his key scientific achievements, pedagogical excellence, and significant impact on the development of the national medical school. It emphasizes the importance of Professor Aryaiev’s long-standing work for the advancement of medical science and practice in Ukraine.
Key words: Mykola Leonidovych Aryaiev, pediatrics, neonatology, National Academy of Medical Sciences of Ukraine, scientific activity, medical education.