Demyanov (Демьянов) is a Russian patronymic surname (from Демьян, Damian). Notable people with the surname include:
- Mikhail Demyanov (1873–1913), Russian painter
- Nikolay Demyanov (1861–1938), Russian chemist
- Viktor Demyanov (born 1999), Russian footballer
See also
edit- Demyanyuk, a Ukrainian cognate