Namesakes
British Prime Ministers:
1 prime minister
Boris Johnson 2019-2022 
Bulgarian Kings and Tsars:
2 tsars, 1 king
King Boris I 852-889
Tsar Boris II 969-977
Tsar Boris III 1918-1943
Fictional Characters from Song Titles:
1 character
(character) Boris 1966 Boris the Spider
Nobel Prize Winners:
1 literature, 1 medicine
(medicine) Ernst Chain (a.k.a. Boris) 1945
(literature) Boris Pasternak 1958
Notable Actors and Entertainers:
2 actors
Boris Karloff 1887-1969
Boris Dvornik 1939-2008
Notable Athletes:
2 chess, 1 tennis
(chess) Boris Spassky 1937-
(tennis) Boris Becker 1967-
(chess) Boris Gelfand 1968-
Notable Businesspeople:
1 businessperson
Boris Berezovsky 1946-2013
Notable Journalists:
1 journalist
(journalist) Boris Dežulović 1964-
Notable Musicians:
1 singer
Boris Novković 1967-
Notable Politicians and Statespeople:
1 politician
Boris Dittrich 1955-
Notable Writers:
3 authors
Boris Pasternak 1890-1960
Boris Vian 1920-1959
Boris Akunin 1956-
Olympic Medalists:
3 bronze, 3 silver, 2 bronze/silver, 1 gold
(silver) Boris Tokarev 1952; 1956 4x100 m relay
(bronze) Boris Markarov 1956 water polo
(bronze) Boris Nikitin 1956 swimming - 4x200 m freestyle relay
(bronze/silver) Boris Goykhman 1956; 1960 water polo
(bronze) Boris Popov 1964 water polo
(bronze/silver) Boris Grishin 1964; 1968 water polo
(silver) Boris Isachenko 1980 archery - individual
(gold) Boris Becker 1992 tennis
(silver) Boris Steimetz 2008 swimming - 4x100 m freestyle relay
Other Leaders:
3 presidents
President Boris Yeltsin 1991-1999 Russia
President Boris Trajkovski 1999-2004 Macedonia
President Boris Tadić 2004-2012 Serbia
Rock and Roll Hall-of-Famers:
1 musician
Boris Williams 2019 The Cure
Russian Grand Dukes and Tsars:
1 tsar
Tsar Boris Godunov 1598-1605
Saints:
2 saints
Saint Boris I of Bulgaria ?-907
Saint Boris ?-1019