Guillermo

“A protector or helmeted warrior.”

Spain origin · Unisex name

♂ 100% boys♀ 0% girls

#834US 2023

292Births / yr

↑Rising

30.7kAll-time births

📅 Since 196600

How to pronounce Guillermo

gee·ERM·oh

/ɡiː.ˈɛrm.oʊ/ · stress on ERM · 3 syllables

“A protector or helmeted warrior.”

Spain origin · Unisex name

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.

🌿

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

How popular is Guillermo right now?

Rising — up 16 spots — currently #834 in the US out of 135.5k tracked names

US Trend 1975–2023#834 · Top 0.62%

1975

1980

1985

1995

2021

2022

2023

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	—

Name Popularity Timeline

Popularity Statistics for Guillermo

Best Year2021Rank #812

Peak Count299

Average Rank#6387

Current Trend↗Rising

Data Range1975 - 20237 years

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:

Lisa Kimberly Mary Michelle Karen

Guillermo by decade

Guillermo peaked in the 1960s. See all 1960s names →

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?

CROATIAN

Vilko

DUTCH

JellePimWilWillyWim

ENGLISH

BillBillieBillyLiamWilWillWillieWilly

ESPERANTO

Vilĉjo

What names sound and feel like Guillermo?

Based on sound, origin, and style — parents who love Guillermo also consider these

Guillerma

Spain · Resolute protector

Gillermo

Spain · Determined protector

Guilherme

Portugal · Will helmet

Guglielmo

Sanskrit · A Sanskrit name

Guillema

Sanskrit · A Sanskrit name

Gualberto

Spain · Shining valley

How is Guillermo written in other languages?

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.