Prince of the Imperial Blood Constantine Constantinovich of Russia, nicknamed Kostya by the family, was the third son and fourth child of Grand Duke Konstantin Konstantinovich of Russia by his wife Grand Duchess Elizabeth Mavrikievna of Russia.
- Occupation
- politician, military personnel, military officer
- Citizenship
- Russian Empire
- Born
- January 1, 1891
- Died
- July 18, 1918