| Nikolay Demyanov | |
|---|---|
| Born | Nikolay Yakovlevich Demyanov March 27 [O.S. March 15] 1861 Tver | 
| Died | March 19, 1938 (aged 77) Moscow | 
| Nationality | Russian | 
| Occupation | Organic chemist | 
| Known for | Demjanov rearrangement | 
| Awards | Lenin Prize (1930) | 
Nikolay Yakovlevich Demyanov (Russian: Никола́й Я́ковлевич Демья́нов; March 27 [O.S. March 15] 1861, Tver – March 19, 1938, Moscow), also known as Demjanov and Demjanow, was a Russian organic chemist and a member of the USSR Academy of Sciences (1929). He is internationally known for the Demjanov rearrangement organic reaction and other discoveries.
He was a recipient of the Lenin Prize in 1930.