Guillermo - name meaning, origin

The boy's name Guillermo \gu(i)-ller-mo, guill(e)-rmo\ is a variant of Guillaume (Old German) and William (Old German), and the meaning of Guillermo is "will helmet, protection".

The baby name Guillermo sounds like Gillermo and Guilherme. Another similar baby name is Quiller.

Guillermo is a very common first name for men (#379 out of 1220) and also a very common last name for both men and women (#9828 out of 88799). (1990 U.S. Census)

Displayed below is the baby name popularity trend for the boy name Guillermo. Compare Guillermo with its source forms and related boy names.

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