What does Guillermo mean and where does it come from?
The name Guillermo is traditionally a male name in Spanish-speaking countries, derived from the Old High German name 'Willihelm', which combines 'wil' (will or desire) and 'helm' (helmet or protection). Its use for females is rare and often seen in creative naming practices. Guillermo is also associ
Cultural significance
Guillermo has been a cherished name across cultures, particularly in Spain-speaking communities, where it reflects values of a protector or helmeted warrior..
Peak popularity
Reached #6630 in 1966 — currently #834 in the US.
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Related Reading
Spain-origin baby names with timeless appeal
Browse names →What middle names flow best with Guillermo?
Guillermo works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful
Guillermo Grace
Most popular combo · classic
Guillermo Rose
Floral · soft ending
Guillermo Mae
Sweet · timeless
Guillermo Claire
French influence · crisp
Guillermo Jane
Literary · strong
Guillermo Skye
Modern · airy feel
How popular is Guillermo right now?
Rising — up 16 spots — currently #834 in the US out of 135.5k tracked names
| Year | US Rank | Births | vs Prior Year |
|---|
| 2023 | #834 | 292 | ▲ up 16 · +2% births |
| 2022 | #850 | 287 | ▼ down 38 · -4% births |
| 2021 | #812 | 299 | ▲ up 11013 · +4883% births |
| 1995 | #11825 | 6 | ▼ down 1071 · +20% births |
| 1985 | #10754 | 5 | ▼ down 269 |
| 1980 | #10485 | 5 | ▼ down 1337 |
| 1975 | #9148 | 5 | — |
The story of Guillermo
Guillermo is a relatively modern name, first appearing in US records in 1966. A total of 30,680 babies have received this name. The name has grown more popular over time, rising from #9148 in 1975 to #834 in 2023. Guillermo is used for both genders: 0% female and 100% male.
Names that peaked alongside Guillermo in 1966:
Guillermo by decade
| Decade | Births | |
|---|
| 1880s | 5 | |
| 1890s | 13 | |
| 1900s | 44 | |
| 1910s | 253 | |
| 1920s | 821 | |
| 1930s | 783 | |
| 1940s | 941 | |
| 1950s | 1,495 | |
| 1960s | 2,114 | |
| 1970s | 3,360 | |
| 1980s | 4,384 | |
| 1990s ★ | 6,491 | |
| 2000s | 6,097 | |
| 2010s | 3,609 | |
| 2020s | 270 | |
What are good nicknames for Guillermo?
ENGLISH
BillBillieBillyLiamWilWillWillieWilly
What names sound and feel like Guillermo?
Based on sound, origin, and style — parents who love Guillermo also consider these
How is Guillermo written in other languages?
Gender variants of Guillermo
Common questions about the name Guillermo
What does the name Guillermo mean?
Guillermo means "A protector or helmeted warrior." — a name rooted in Spain tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.
How popular is the name Guillermo?
Guillermo is currently ranked #834 as a baby name in the US and is becoming rarer and more distinctive, making it a unique choice that stands out.
What is the cultural origin of Guillermo?
Guillermo originates from Spain tradition. Spain names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.
How do you pronounce the name Guillermo?
Guillermo is a three-syllable name pronounced G IY0 EH1 R M OW0. The pronunciation is straightforward for English speakers, and the name reads clearly on paper — an important practical consideration for parents.
What sibling names go well with Guillermo?
Guillermo pairs beautifully with sibling names that share a similar Spain heritage or complement its melodic and flowing sound. Names with a similar vibe create a cohesive sibling set without matching too closely.