Bulgarian Presidents and Prime Ministers: 1 prime minister
(prime minister) Sergei Stanishev   2005-2009  
Fictional Characters from Television: 1 character
Walter Skinner (a.k.a. Sergei)   1993   The X-Files  
Hall-of-Famers: 3 ice hockey, 1 basketball
(basketball) Sergei Belov   1992  
(ice hockey) Sergei Fedorov   2015  
(ice hockey) Sergei Makarov   2016  
(ice hockey) Sergei Zubov   2019  
Most Valuable Players: 1 winner
Sergei Fedorov   1994   ice hockey  
Notable Activists and Revolutionaries: 1 activist
(activist) Syarhey Tsikhanouski (a.k.a. Sergei)   1978-  
Notable Actors and Entertainers: 1 actor
Ivan Sergei (a.k.a. Sergei)   1971-  
Notable Athletes: 3 ice hockey, 2 basketball, 1 soccer
(basketball) Sergei Belov   1944-2013  
(ice hockey) Sergei Makarov   1958-  
(ice hockey) Sergei Fedorov   1969-  
(ice hockey) Sergei Zubov   1970-  
(soccer) Sergei Ignashevich   1979-  
(basketball) Sergei Monia   1983-  
Notable Businesspeople: 1 businessperson
Sergei Diaghilev   1872-1929  
Notable Filmmakers: 2 directors
Sergei Eisenstein   1898-1948  
Sergei Parajanov   1924-1990  
Notable Musicians: 2 composers
Sergei Rachmaninoff   1873-1943  
Sergei Prokofiev   1891-1953  
Notable Scientists and Inventors: 1 engineer, 1 physician
Sergei Korsakov   1854-1900  
Sergei Korolev   1907-1966  
Notable Writers: 1 poet
Sergei Yesenin   1895-1925  
Olympic Medalists: 3 bronze/gold, 2 bronze, 2 gold/bronze, 1 gold/silver, 1 silver, 1 silver/bronze, 1 silver/gold
(bronze/gold) Sergei Kovalenko   1968; 1972   basketball  
(gold/bronze) Sergei Belov   1968; 1972; 1976; 1980   basketball  
(bronze) Sergei Zhelanov   1980   decathlon  
(silver) Sergei Shakhrai   1980   figure skating  
(silver/gold) Sergey Koplyakov (a.k.a. Sergei)   1976; 1980   swimming - 4x200 m freestyle relay; swimming - 200 m freestyle; swimming - 4x100 m medley relay  
(gold/silver) Sergei Fesenko   1980   swimming - 200 m butterfly; swimming - 400 m medley  
(gold/bronze) Sergey Kotenko (a.k.a. Sergei)   1980; 1988   water polo  
(bronze/gold) Sergei Tarakanov   1980; 1988   basketball  
(silver/bronze) Sergei Garbuzov   2000; 2004   water polo  
(bronze/gold) Sergei Martynov   2000; 2004; 2012   shooting  
(bronze) Sergei Monia   2012   basketball  
Other Leaders: 1 prime minister
Prime Minister Sergei Sidorsky   2003-2010   Belarus