Guillermo
Spanish · Boy · 3 syllables
Popularity & facts
Relative popularity index, 2010–2025Popularity over time
Popularity indexHistorical popularity from 1880–2025 · US Social Security Administration data
About the name Guillermo
Guillermo means "resolute protector" or "strong-willed warrior," derived from the Germanic elements "wil" (will/desire) and "helm" (helmet/protection), filtered through Old French as Guillaume.
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Etymology
Guillermo means "resolute protector" or "strong-willed warrior," derived from the Germanic elements "wil" (will/desire) and "helm" (helmet/protection), filtered through Old French as Guillaume. The name is primarily used in Spanish-speaking and Portuguese-speaking Catholic cultures, with historical prominence among Spanish and Latin American nobility and royalty, including multiple kings of Spain and Portugal.
Guillermo currently ranks #902 in the United States as a boy's name. It reached its peak popularity around 1998.
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Sibling name ideas
Spanish names that sit beautifully beside GuillermoSimilar names you might like
Names starting with GMore names starting with G
- Ganesh
- Gaspard
- Gaston
- Gabriella
- Gabrielle
- Gaurav
- Gabin
- Gala
- Gaspar
- Gabriela
- Gabriele
- Gael
- Gabriel
- Gautam
- Gavin
- Gayatri
- Gaia
- Gauri
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Names that sound like Guillermo
Phonetic match, not just spelling"Guilherme means "resolute protector" or "determined warrior," derived from the Germanic elements "wil" (will, desire) and "helm" (helmet, protection), filtered…"
"Guillermine is the feminine form of Guillermo, derived from the Germanic name William, composed of the elements "wil" (will/desire) and…"
"Guilhermine is the feminine form of Guilherme (Portuguese/Brazilian Portuguese version of William), derived from the Germanic elements "wil" (will/desire) and…"
"Guilhermina is the feminine form of Guilherme (Portuguese/Galician for William), derived from the Germanic elements "wil" (will, desire) and "helm"…"
"The name 'Glorene' is a modern invented name, likely a feminine elaboration of the Latin word *gloria* meaning "glory," combined…"
"Guillerma is the feminine form of Guillermo, the Spanish equivalent of William, meaning "resolute protector" from the Germanic elements *wil*…"
"The name 'Gloriane' means "glory" or "glorious one," derived from the Latin word *gloria* (glory) combined with the feminine suffix…"
"Guilherm means "resolute protector" or "strong-willed defender," derived from the Germanic elements "wil" (will/desire) and "helm" (helmet/protection), which evolved through…"
"Gwilherm means "resolute protector" or "determined defender," derived from the Germanic elements "wil" (will/resolve) and "helm" (helmet/protection), making it the…"
"The name Gloriana means "glorious" or "of glory," derived from the Latin word *gloria* (glory) with the feminine suffix *-ana*."
"The name Glorine means "glory" or "glorious one," derived from the Latin word *gloria*."
"The given name 'Gullermo' is derived from the Germanic name 'Wilhelm', meaning 'resolute protector' or 'strong-willed warrior', with its linguistic…"