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Home › Baby Names Directory › Guillaume

Guillaume

♂ Boy

Pronounced gee-YOHM /ɡiˈjom/Medium

Meaning: Guillaume is the French form of William, from Germanic Wilhelm ('will; resolve' + 'helmet; protection'), read as 'resolute protector.' A classic, elegant French name.Medium

In 30 seconds: The French William: Guillaume means 'resolute protector' (said 'gee-YOHM'). Classic and elegant.
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Origin MediumFrench
MeaningGuillaume is the French form of William, from Germanic Wilhelm ('will; resolve' + 'helmet; protection'), read as 'resolute protector.' A classic, elegant French name.
U.S. rank (2024)#11365 ↗ Rising
2024 U.S. births6 boys (0.00% of U.S. boys)
Peak year1997
Total births (all-time)≈ 341

Popularity in the U.S. · SSA data

peak 199719672024

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Guillaume is the French form of William (Germanic Wilhelm, 'will' + 'protection'), read as 'resolute protector.' Borne by William the Conqueror (Guillaume le Conquérant), it reads as a classic, elegant French pick (said 'gee-YOHM').

In the U.S. it appears only rarely, mostly in French-heritage families. Rare, classic, and elegant.

Did you know? Guillaume is the French form of William ('resolute protector,' from Germanic Wilhelm) — the name of William the Conqueror in his native French, giving it a classic, regal air (said 'gee-YOHM').
Overall data confidence 55%
References — Guillaume — French form of William, 'resolute protector'

Variations

WilliamGuillermoWilhelm

Nicknames

GuiWilly

Famous Bearers

  • Famous bearers coming soon.

If you like Guillaume…

Guillermo— the Spanish twin of Guillaume
William— the English form of Guillaume
Laurent— a like elegant French name
Lucien— a like classic French pick

Explore names like Guillaume

By themeheritageclassicfrenchelegant
By meaningProtector

All themes →All meanings →All origins →

Frequently Asked

What does the name Guillaume mean?

Guillaume is the French form of William, meaning 'resolute protector.'

How do you pronounce Guillaume?

It's said gee-YOHM /ɡiˈjom/ — two syllables, stress on the last.

Is Guillaume a boy or girl name?

Guillaume is a boy's name, the French William.

How popular is Guillaume?

Guillaume is rare in the U.S. and classic in France.

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