Guillermo - Name Meaning and Origin

The boy's name Guillermo \gu(i)-ller-mo, guill(e)-rmo\ is a variant of Guillaume and William.

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

Guillermo is a popular male first name and a very popular surname (source: 1990 U.S. Census). Displayed below is the baby name popularity trend for the boy's name Guillermo. Click here to compare Guillermo with related baby names.