# Guillermo

/ɡiˈɛɹmoʊ/ (US) · CEFR C2 · Noun

Source: https://englishreference.com/word/guillermo
Updated: 2026-08-15

## Definition

the Spanish version of the name William. It is a common first name for men in Spanish-speaking countries.

For teachers: the Spanish-language equivalent of the masculine given name William. Derived from the Germanic name Wilhelm, composed of elements meaning 'will' or 'desire' and 'helmet' or 'protection'.

## Examples

- Guillermo is a very popular name in Mexico.
- The director Guillermo del Toro is famous for his imaginative and dark fantasy films.
- While the name is most commonly associated with Spanish-speaking regions, Guillermo has gained international recognition through the works of various prominent artists and historical figures.

## Usage notes

- Used as a proper noun; typically capitalised in all contexts.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.