Guillaume Apollinaire (1880–1918), French Poet, Writer And Art Critic
Guillaume BudÉ (1467–1540), French Scholar
Guillaume Canet (born 1973), French Actor
Guillaume ChalanÇon, French Golfer
Guillaume Cornelis Van Beverloo (born 1922), Dutch Artist
Guillaume Courtois (1628-1679), French Painter
Guillaume Dah Zadi (born 1978), CÔte D'ivoire Footballer
Guillaume De Gisors (1219–1307), Grandson Of Jean De Gisors
Guillaume De L'hÔpital (1661–1704), French Mathematician
Guillaume De Lamoignon De Blancmesnil (1683–1772), French Magistrate
Guillaume De Machaut (1300–1377), French Composer And Poet
Guillaume Delisle (1675–1726), French Cartographer
Guillaume Depardieu (1971–2008), French Actor
Guillaume Du Bellay (1491–1543), French Diplomat And General
Guillaume Dubois (1775-1851), French Solder And Marshal Of France
Guillaume Duchenne (1806–1875), French Neurologist
Guillaume Dufay (1397–1474), Franco–flemish Composer And Music Theorist
Guillaume Dufresne D'arsel, French Colonial Governor Of Mauritius
Guillaume Dupuytren (1777–1835), French Anatomist And Surgeon
Guillaume Emmanuel Paul De Homem-christo, Musician
Guillaume Gouffier, Seigneur De Bonnivet (1488-1525), French Soldier
Guillaume Groen Van Prinsterer (1801–1876), Dutch Politician And Historian
Guillaume Henri Dufour (1787–1875), Swiss General And Topographer
Guillaume Huin D'estaing († 1452), Antipope-appointed Cardinal
Guillaume Latendresse, National Hockey Player
Guillaume Le Gentil (1725–1792), French Astronomer
Guillaume Mathieu Dumas, Napoleonic General
Guillaume Pellicier, French Diplomat
Guillaume Rondelet (1507–1566), Professor Of Medicine At The University Of Montpellier
Guillaume Sarkozy (born 1951), French Textile Entrepreneur