Gillermo
- US rank
- Unranked
- Syllables
- 3
- Peak
- #2,158 in 1972
0 babies were named Gillermo in the US in 2025.
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US births per million boys, 1922–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Gillermo you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryGillermo first shows up in US birth records in 1922, the first year at least 5 babies got it. It has been in use for 103 years since.
- Best yearIts best year was 1972, when it reached #2,158.
About the name Gillermo
Gillermo is a boy name of Spanish origin. It has 8 letters and 3 syllables, starting with G and ending in “-rmo”. US birth records list Gillermo for boys from 1922 to 2011, in 70 of those 90 years. Its best year was 1972, when it ranked #2,158 among boy names. It hasn't been given to 5 or more US babies in a year since 2011, so today it's a genuinely rare choice.
Origin:Spanish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1920s | 6.2 | 160,321 boys |
| 1930s | 3.1 | 322,581 boys |
| 1940s | 2.5 | 404,858 boys |
| 1950s | 2.8 | 357,143 boys |
| 1960s | 1.9 | 512,821 boys |
| 1970s | 6.8 | 147,059 boys |
| 1980s | 5.6 | 179,533 boys |
| 1990s | 7.1 | 140,845 boys |
| 2000s | 2.7 | 370,370 boys |
| 2010s | 1.3 | 769,231 boys |
More Spanish boy names
- Boy name: Mateo · gift of God
- Unisex name: Elias · my God is Yahweh
- Boy name: Santiago · Saint James
- Boy name: Leonardo · brave as a lion
- Unisex name: Jose · he will add
- Boy name: Xavier · new house
- Boy name: Luis · famous warrior
- Boy name: Matteo · gift of God
Questions about the name Gillermo
What is the origin of the name Gillermo?
Gillermo has Spanish roots in our records. Other Spanish names include Mateo, Elias, Santiago.
Is Gillermo a boy or girl name?
Gillermo is a boy name.
How popular is the name Gillermo?
Gillermo is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 2011. It peaked at #2,158 in 1972.