boy's name
Guilherme
- Origin Portuguese
- Gender Boy
- Letters 9
- Popularity Rare
- Births on record 1,182
Ireland
#549
2008 births
Guilherme is a boy's name. In 2025 it was given to 8 babies in the United States. It is a rare choice.
- Guilherme is a name of Portuguese origin.
- Peaked in 2006, when 39 babies were given the name.
- It has been falling over the past decade.
- Today about 1 in 414,422 babies in the United States is given this name.
- First appears in US birth records in 1921.
Guilherme over time
Births per decade in the United States, 1920s to 2020s. The striped bar is the 2020s, still in progress — it covers 2020 to 2025, not a full ten years.
Show the numbers
| Decade | Births |
|---|---|
| 1920s | 6 |
| 1980s | 6 |
| 1990s | 63 |
| 2000s | 257 |
| 2010s | 149 |
| 2020s (to 2025) | 41 |
How popular is Guilherme?
In 2025, Guilherme was given to 8 babies in the United States. It is a rare choice.
Where Guilherme is used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names that peaked alongside Guilherme
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Guilherme also like
Names whose popularity has risen and fallen in step with Guilherme over the last century — the same taste, a different name.
Sibling names for Guilherme
Names from the same era that won't rhyme or share an initial with Guilherme — the two things that make a sibling set grate.
Common questions about Guilherme
How popular is the name Guilherme?
In 2025, Guilherme was given to 8 babies in the United States. It is a rare choice.
Is Guilherme a girl's or a boy's name?
Guilherme is given almost entirely to boys in birth records.
When was Guilherme most popular?
Guilherme peaked in 2006, when 39 babies were given the name. It has been falling over the past decade.
Is Guilherme a good name?
That is not something records can settle, but they can tell you what you would be choosing. Guilherme currently ranks #5,253 in the United States. It has been falling over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.