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What does Guillaume mean?

Guillaume Pronunciation of Guillaume as a boys' name is pronounced gee-OHM. It is of Old German origin, and the meaning of Guillaume is "determined protector". French variant of William. French poet Guillaume Apollinaire.

ASSOCIATED WITH Gu-, determined (faithful), protector (defender)


VARIANTS Gillermo, Guglielmo, Guilherme, Guillermo, Gwillyn, Gwilym



Guillaume Kaden (G.K.), ..

How popular is Guillaume?

Guillaume is a rare given name for men but a very popular last name for both adults and children (#11719 out of 150436, Top 8%). (2000 U.S. CENSUS)

Which version is better?

Guillermo (#660 IN RECENT RANKINGS) and William (#5) are the popular alternative forms of Guillaume (NOT RANKED). Adoption of these relations of Guillaume reached its peak during 1880-1889 (MEDIAN #939) and is now much reduced (#332, 89%). (TOP BABY NAMES, 2015)

Top 2000 baby names ranking of Guillermo, William in U.S.

Top 100 baby names ranking of William outside U.S.

Similar Names

Recommended sound-alike names are Gaillard, Gaillardet, Gaille, Ghillie, Gilam, Gillan, Gillaspie, Gillbie (see Gilby), Gillette, Gillmore and Gullan. Like Guillaume, these names are not commonly used.

See names
in meaning and etymology.