Namesakes
Cyril I 412-444 
Cyril II 1078-1092
Cyril III 1235-1243
Cyril IV 1853-1861
Cyril V 1874-1927
Cyril VI 1959-1971
Hall-of-Famers:
1 ice hockey
(ice hockey) Cy Denneny 1959
Nobel Prize Winners:
1 chemistry
(chemistry) Cyril Norman Hinshelwood 1956
Notable Actors and Entertainers:
1 actor
Cyril Cusack 1910-1993
Notable Athletes:
1 ice hockey
(ice hockey) Cy Denneny 1891-1970
Olympic Medalists:
3 bronze, 1 silver
(bronze) Cyril Porter 1912 3000 m team
(bronze) Cyril Seedhouse 1912 4x400 m relay
(bronze) Cyril Gill 1928 4x100 m relay
(silver) Cyril Julian 2000 basketball
Other Leaders:
1 president
President Cyril Ramaphosa 2018- South Africa
Saints:
5 saints
Saint Cyril of Caesarea ?-250
Saint Cyril ?-257
Saint Cyril 315-386
Saint Cyril I c. 376-444
Saint Cyril the Philosopher 827-869