Guillermo

Q: What is the origin of Guillermo?

Guillermo is of Germanic origin. The name carries significant cultural meaning and has been used across generations within its origin tradition.

Q: How popular is the name Guillermo?

According to the latest SSA data, Guillermo is currently ranked #999999 in the United States. The popularity of this name has evolved over the past century based on cultural preferences and naming trends.

Q: Is Guillermo a girl name?

Guillermo is traditionally a girl name. Modern naming practices are increasingly flexible, and names can be used across genders based on personal choice and cultural context.

female

Updated 6 months ago

Meaning

"Resolute Protector"

Spanish form of William, reflecting Germanic elements for will and protection, widely used across the Hispanic world.

Themes:spanishgermanicprotect

Unique Rare

Fact-checked by Lily Anderson

M.F.A. Creative Writing, Sarah LawrencePublished NovelistName Collection Curator • Creative Names Editor

This name has been verified against authoritative sources including SSA data, etymology databases, and cultural naming traditions.

Popularity History of Guillermo

Full SSA rank history from 1880 to 2024

UnrankedNot ranked in 2024

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Yearly Ranking Snapshot

Pick any SSA release year to inspect that year's national ranking and how it changed from the year before.

Year

Selected Year Rank

Unranked

Guillermo did not appear in the national SSA rankings for 2024.

Change Vs Previous Year

no national rank in 2024

Data Source

Popularity rankings are based on official data from the Social Security Administration (SSA), which tracks baby name applications in the United States.

Last updated: 2024 • Data source updated annually

Guillermo Nicknames

Familiar short forms, playful variations, and easy everyday options for Guillermo.

10 ideas

Guiie

Nickname

Guil

Nickname

guil

Nickname

guiy

Nickname

illy

Nickname

ermo

Nickname

rmoy

Nickname

“Pure”

#1063

|Greek

Baby Name Lists That Include Guillermo

Browse every Namylab list page that currently includes Guillermo, from meaning and origin collections to letter, syllable, and themed baby name lists.

19 linked lists

❓ Frequently Asked Questions

What does the name Guillermo mean?

Guillermo means "Resolute Protector". Spanish form of William, reflecting Germanic elements for will and protection, widely used across the Hispanic world.

What is the origin of Guillermo?

Guillermo is of Germanic origin. The name has been used historically across cultures and carries significant cultural meaning within its origin tradition.

How popular is the name Guillermo?

According to the latest SSA data, Guillermo is currently not ranked in the United States. The name has shown interesting trends over the past century, with popularity varying based on cultural preferences and naming trends.

Is Guillermo a girl name?

Guillermo is traditionally a girl name. However, modern naming practices are increasingly flexible, and names can be used across genders based on personal preference.

What are good nicknames for Guillermo?

Popular nicknames for Guillermo include Guiie, Guil, guil, guiy, and more. These offer shorter, more casual alternatives for everyday use.

What names are similar to Guillermo?

There are many names similar to Guillermo in meaning, origin, or sound. Explore the Similar Names section to discover alternatives that may resonate with you.

Quick Facts

OriginGermanic, Spanish

Syllables3

Length9 letters

Trend→ Stable

Starts withG

Sibling Ideas

Brothers

Arnold Aubrey Adolph Adolfo Alphonse

Sisters

Alberta Alissa Alisa Aubrie Adela

Explore More Girl Names Like Guillermo

Guillermo has Germanic roots, making it a wonderful choice if you love names from this heritage. Discover more options in our Germanic baby names collection, where you'll find hundreds of names with similar cultural depth.

Guillermo appears in several of our curated collections. Check out Unique Baby Names and Spanish Baby Names for more names with a similar feel. You might also enjoy browsing Names That Mean The Sun for Boys and Girls and Names That Mean Child Of God for Boys and Girls.

Before you decide, try our Full Name Preview to see how Guillermo pairs with your surname. The Sibling Name Matcher can help find names that complement Guillermo beautifully, and the Nickname Predictor reveals the most common short forms.

Explore our full baby name lists for origin-based, meaning-based, and themed collections, or head back to the baby name generator to continue your search.