Costa Ronin   (m)   1979-  
Notable Actors and Entertainers   (actor)
Elmer Niklander   (middle name Konstantin)   (m)   1890-1942  
Olympic Medalists   1912; 1920   discus throw - both hands; shot put - both hands; discus throw; shot put   (bronze/gold/silver)
Konstantin   (m)   1186-1218  
Russian Grand Dukes and Tsars   1216-1218
Konstantin I   (m)   ?-1277  
Bulgarian Kings and Tsars   1257-1277
Konstantin II   (m)   c. 1370-1422  
Bulgarian Kings and Tsars   1397-1422
Konstantin Chernenko   (m)   1911-1985  
Other Leaders   1984-1985   Soviet Union   (general secretary)
Konstantin Dubrovin   (m)   1977-  
Olympic Medalists   1996   swimming - 4x200 m freestyle relay   (bronze)
Konstantin Kravchuk   (m)   1985-  
Notable Athletes   (tennis)
Konstantin Lavronenko   (m)   1961-  
Notable Actors and Entertainers   (actor)
Konstantin Muraviev   (m)   1893-1965  
Bulgarian Presidents and Prime Ministers   1944   (prime minister)
Konstantin Novoselov   (m)   1974-  
Nobel Prize Winners   2010   (physics)
Notable Scientists and Inventors
Konstantin Päts   (m)   1874-1956  
Estonian Presidents and Prime Ministers   1921-1922; 1923-1924; 1931-1932; 1932-1933; 1933-1934; 1934-1937; 1938-1940   (state elder/prime minister/president)
Konstantin Rokossovsky   (m)   1896-1968  
Notable Military Figures
Konstantin Stanislavski   (m)   1863-1938  
Notable Actors and Entertainers   (actor)
Notable Filmmakers
Konstantin Stoilov   (m)   1853-1901  
Bulgarian Presidents and Prime Ministers   1887; 1894-1899   (prime minister)
Konstantin Tsiolkovsky   (m)   1857-1935  
Notable Scientists and Inventors
Konstantin Ushkov   (m)   1977-  
Olympic Medalists   1996   swimming - 4x100 m freestyle relay   (silver)
Konstantin Volkov   (m)   1960-  
Olympic Medalists   1980   pole vault   (silver)