Guillaume
Guillaume is a boys' name of French origin meaning “resolute protector.” The French form of William, Guillaume has deep royal heritage — William the Conqueror was Guillaume le Conquérant.
how do you pronounce Guillaume?
gee-YOHM
Hear it spoken aloud with our AI pronunciation tool.
what does Guillaume mean?
The name Guillaume means “resolute protector.” It comes from the French language tradition.
The French form of William, Guillaume has deep royal heritage — William the Conqueror was Guillaume le Conquérant. It remains one of France's most enduring masculine names, conveying strength and nobility. The distinctive pronunciation gives it an unmistakable French identity.
where does the name Guillaume come from?
Wiktionary and Wikipedia agree Guillaume is the French form of William, tracing to Germanic elements glossed as will and helmet and reconstructed as *Wiljahelmaz — consistent with the resolute protector sense given elsewhere — and note it as the Oïl-language form corresponding to the Occitan Guilhem and Catalan Guillem.
the history of Guillaume
Wikipedia identifies it as the northern French (Oïl) form of this old Germanic name, alongside its Occitan and Catalan cognates; the source doesn't discuss William the Conqueror specifically, so that detail isn't repeated here.
what are the nicknames and variants of Guillaume?
Variants around the world
who are famous people named Guillaume?
- Guillaume Apollinaire (avant-garde poet)
- Guillaume Canet (French actor and filmmaker)
what names are similar to Guillaume?
what names go well with Guillaume?
Sibling names that share Guillaume's rhythm and register without echoing it too closely.
Last reviewed April 30, 2026 · Curated by HushName editorial
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