unisex name
Rei
- Origin Japanese
- Gender Unisex
- Letters 3
- Popularity Uncommon
- Births on record 1,276
Rei is a unisex name. It is given to both girls and boys — about 53% of recorded births with this name are girls. In 2025 it was given to 59 babies in the United States. It is used consistently but remains uncommon.
- Rei is a name of Japanese origin.
- Peaked in 2019, when 67 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 56,192 babies in the United States is given this name.
- First appears in US birth records in 1974.
Rei over time
Births per decade in the United States, 1970s 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 |
|---|---|
| 1970s | 5 |
| 1980s | 25 |
| 1990s | 58 |
| 2000s | 224 |
| 2010s | 384 |
| 2020s (to 2025) | 332 |
How popular is Rei?
In 2025, Rei was given to 59 babies in the United States. It is used consistently but remains uncommon.
Where Rei 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 Rei
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Rei also like
Names whose popularity has risen and fallen in step with Rei over the last century — the same taste, a different name.
Sibling names for Rei
Names from the same era that won't rhyme or share an initial with Rei — the two things that make a sibling set grate.
Common questions about Rei
How popular is the name Rei?
In 2025, Rei was given to 59 babies in the United States. It is used consistently but remains uncommon.
Is Rei a girl's or a boy's name?
Rei is used for both girls and boys. About 53% of recorded births with this name are girls.
When was Rei most popular?
Rei peaked in 2019, when 67 babies were given the name. It has been rising over the past decade.
Is Rei a good name?
That is not something records can settle, but they can tell you what you would be choosing. Rei currently ranks #2,575 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.