Guillaume
Guillaume is the French equivalent of William, which is of old Germanic origin from wille + helm. It is an Oïl form corresponding to Occitan Guilhem and the Catalan form Guillem.
- French
Meaning & Origin of Guillaume
What this name means, where it came from, and how it has traveled across cultures.
Guillaume is the French equivalent of William, which is of old Germanic origin from wille + helm. It is an Oïl form corresponding to Occitan Guilhem and the Catalan form Guillem.
Source: Wikipedia (CC BY-SA 3.0). Read more →
Cultural Origins (via Behind the Name)
- French
The Story of Guillaume
Guillaume first appeared in U.S. Social Security Administration records as a baby boy name in 1967, with 5 babies given the name that year. Its peak popularity came in 1997, when 19 Guillaumes were born — ranking #3,601 that year. As of 2026, Guillaume ranks #10,889 for baby boys with 6 births, with steady use. In total, more than 341 Guillaumes have been born in the U.S. since records began in 1880, spanning the 1960s through the 2020s.
Popularity Over Time
Popularity by State
Where is Guillaume most common?
Predicted country distribution based on naming patterns globally.
- France45%
- Belgium26%
- HT13%
- CI8%
- LU8%
Source: Nationalize.io . Probabilities are global naming-pattern estimates, not strict counts.
Names that sound like Guillaume
Phonetically similar names — useful when Guillaume is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Guillaume
What does the name Guillaume mean?
What is the origin of the name Guillaume?
How popular is Guillaume in 2026?
When was Guillaume most popular?
Is Guillaume a unisex name?
What names go well with Guillaume?
About the name Guillaume
Guillaume is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1967 and has accumulated 341 births in the dataset. Guillaume's peak popularity came in 1997 when it ranked #3,601. Use the chart and map above to compare Guillaume's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 1997 →
- Names of the 1990s →
- Names starting with "G" →
- Browse all boy names →
- Top names of 2026 →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.