Yuri Nikolayevich Denisyuk (born 27.07.1927) is a Soviet physicist and a corresponding member of the USSR Academy of Sciences (1970). He was born in Sochi. He graduated from the Leningrad Institute of Precision Mechanics (1954). Since 1954 he has worked at the State Optical Institute (head of a laboratory from 1961).
His research concerned physical optics and for the most part holography. In 1962 he proposed and justified a holographic method with recording in three-dimensional media, which for the first time made it possible to record the amplitude, the phase and the spectral composition of the wave field of an object and to obtain an undistorted spatial image of it. Holograms obtained by this method can be reconstructed with an ordinary source of radiation with a continuous spectrum (Lenin Prize, 1970). In recent years he has been working on the foundations of holography and its practical applications; in particular he showed that imaging properties are possessed not only by standing but also by travelling waves of intensity, and he studied their properties in detail. He also works on the problems of the recording and the projection of pictorial holograms by the method of counter-propagating beams that he proposed. USSR State Prize (1982).