Namesakes
Belgian Prime Ministers:
1 prime minister
Guy Verhofstadt 1999-2008 
Fictional Characters from Books:
1 character
Guy Montag 1953 Fahrenheit 451
Fictional Characters from Song Titles:
1 character
(character) Guy 1978 Song For Guy
French Presidents and Prime Ministers:
2 prime ministers
(prime minister) Guy Mollet 1956-1957
(prime minister) Bernard Cazeneuve (a.k.a. Guy) 2016-2017
Hall-of-Famers:
3 ice hockey, 2 basketball, 1 football
(football) Guy Chamberlin 1965
(ice hockey) Guy Lafleur 1988
(ice hockey) Guy Lapointe 1993
(basketball) Guy Lewis 2013
(basketball) Guy Rodgers 2014
(ice hockey) Guy Carbonneau 2019
Most Valuable Players:
1 winner
Guy Lafleur 1977; 1978 ice hockey
Notable Activists and Revolutionaries:
1 revolutionary
(revolutionary) Guy Fawkes 1570-1606
Notable Actors and Entertainers:
6 actors
Robert Newton (a.k.a. Guy) 1905-1956
Guy Madison 1922-1996
Guy Williams 1924-1989
Guy Siner 1947-
Christopher Lambert (a.k.a. Guy) 1957-
Guy Pearce 1967-
Notable Athletes:
2 ice hockey, 1 basketball, 1 soccer
(basketball) Guy Rodgers 1935-2001
(ice hockey) Guy Lafleur 1951-2022
(ice hockey) Guy Carbonneau 1960-
(soccer) Guy N'Dy Assembé 1986-
Notable Filmmakers:
1 director
Guy Ritchie 1968-
Notable Musicians:
1 musician, 1 singer
Guy Berryman 1978-
Guy Sebastian 1981-
Notable Scientists and Inventors:
1 inventor
Guy Stewart Callendar 1898-1964
Notable Writers:
1 author
Guy de Maupassant 1850-1893
Olympic Medalists:
1 bronze/gold, 1 gold/silver, 1 silver, 1 silver/gold, 1 silver/gold/bronze
(silver/gold/bronze) Guy Butler 1920; 1924 400 m; 4x400 m relay
(silver) Guy Revell 1964 figure skating
(silver/gold) Guy Drut 1972; 1976 110 m hurdles
(bronze/gold) Veryan Pappin (a.k.a. Guy) 1984; 1988 field hockey
(gold/silver) Chad le Clos (a.k.a. Guy) 2012 swimming
Rock and Roll Hall-of-Famers:
2 musicians
Guy Todd "Rahiem" Williams 2007 Grandmaster Flash and the Furious Five
Guy Fletcher 2018 Dire Straits
Saints:
4 saints, 2 blessed
Saint Vitus (a.k.a. Guy) 290-303
Saint Guy ?-940
Saint Guy of Anderlecht 950-1012
Saint Guy of Pomposa ?-1046
Blessed Guy Vignotelli 1185-1245
Blessed Guido Maramaldi (a.k.a. Guy) ?-1391
Swiss Presidents:
1 president
Guy Parmelin 2021