Nikolai Ivanovich Ashmarin (Russian: Никола́й Ива́нович Ашма́рин) (September 22 [O.S.
October 4] 1870, Yadrin, Kazan Governorate – August 26, 1933, Kazan) was a Russian scholar who specialized in the study of Chuvash language, culture, and history.
His magnum opus is "The Dictionary of Chuvash Language", published in 17 parts between 1928 and 1958.
[1][2] After graduating from the Lazarev Institute in 1896, Ashmarin taught at the schools and universities of Kazan (with short spells in Simbirsk and Baku).
He was elected a corresponding member of the Academy of Sciences of the USSR in 1929.