Sergey Efimovich Malov (Russian: ?????´? ???´????? ??´???; 28 January 1880, Kazan - 6 September 1957, Leningrad) was a Russian Turkologist who made important contributions to the documentation of archaic and contemporary Turkic languages, classification of the Turkic alphabets, and the deciphering of the Turkic Orkhon script.