Guillaume

boyGermanicChristian

Guillaume is a Christian boy name of Germanic, via French origin, meaning “Resolute protector”.

MeaningResolute protector
GenderBoy
OriginGermanic, via French
Pronunciationgee-YOHM
TraditionChristian
Used inFrance, Belgium, Canada, Switzerland

Meaning and origin of Guillaume

Guillaume is the French form of William, from the Germanic wil, 'will' or 'desire', and helm, 'helmet' or 'protection'. William the Conqueror, who became king of England in 1066, was Guillaume to his own people. Medieval saints such as Saint William of Gellone also carried it. The poet Guillaume Apollinaire is a famous modern bearer.

Is Guillaume a Christian name?

Guillaume is a traditional French Catholic name, honouring several medieval Saints William.

How popular is Guillaume?

Popular in France in the 1980s and 1990s.

Gifts with the name Guillaume

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Spellings and variants of Guillaume

WilliamGuglielmoGuillermoWilhelm

Names similar to Guillaume

More Christian boy names

Frequently asked questions

What does the name Guillaume mean?

Guillaume means 'Resolute protector'. It is of Germanic, via French origin.

Is Guillaume a Christian name?

Guillaume is a traditional French Catholic name, honouring several medieval Saints William.

How do you pronounce Guillaume?

Guillaume is pronounced gee-YOHM.

Is Guillaume a boy or girl name?

Guillaume is usually a boy name.

Updated October 2026. Spotted a mistake? Tell us.