Woiwodschaft Kiew
Nikolay Diletsky (, Mykola Dyletsky, , Nikolay Pavlovich Diletsky, Nikolai Diletskii, , also "Mikolaj Dylecki", "Nikolai Dilezki", etc.; c. 1630, Kiev – after 1680, Moscow) was a music theorist and composer born in the Kiev Voivodeship of the Polish-Lithuanian Commonwealth and active in Russia. He was widely influential in late 17th-century Russia with his treatise on composition, "A Musical Grammar", of which the earliest surviving version dates from 1677. Diletsky's followers included Vasily Titov.