Grand Duke Konstantin Nikolayevich of Russia was the Emperor's Viceroy of Poland from 1862 to 1863 and a general admiral of the Imperial Russian Navy.
- Occupation
- military personnel, monarch
- Position held
- member of the State Council of the Russian Empire
- Citizenship
- Russian Empire
- Born
- September 21, 1827, September 9, 1827
- Died
- January 25, 1892