boy's name
Oneil
- Gender Boy
- Syllables 2
- Letters 5
- Popularity Rare
- Births on record 1,853
Oneil is a boy's name with 2 syllables. In 2025 it was given to 7 babies in the United States. It is a rare choice.
- Peaked in 1924, when 43 babies were given the name.
- It has been falling over the past decade.
- Today about 1 in 473,709 babies in the United States is given this name.
- First appears in US birth records in 1892.
- 2 syllables, with the stress on syllable 2.
Oneil over time
Births per decade in the United States, 1890s 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 |
|---|---|
| 1890s | 5 |
| 1910s | 127 |
| 1920s | 269 |
| 1930s | 185 |
| 1940s | 171 |
| 1950s | 142 |
| 1960s | 85 |
| 1970s | 83 |
| 1980s | 149 |
| 1990s | 198 |
| 2000s | 189 |
| 2010s | 125 |
| 2020s (to 2025) | 46 |
How popular is Oneil?
In 2025, Oneil was given to 7 babies in the United States. It is a rare choice.
Where Oneil 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.
How Oneil is spelled
Birth registers count each spelling separately, so every one has its own ranking.
| Spelling | What it is | Births on record |
|---|---|---|
| O'neil | O'neil is Oneil written with an apostrophe, recorded mostly in Canada. | 51 |
Names that peaked alongside Oneil
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents who like Oneil also like
Names whose popularity has risen and fallen in step with Oneil over the last century — the same taste, a different name.
Sibling names for Oneil
Names from the same era that won't rhyme or share an initial with Oneil — the two things that make a sibling set grate.
Common questions about Oneil
How popular is the name Oneil?
In 2025, Oneil was given to 7 babies in the United States. It is a rare choice.
Is Oneil a girl's or a boy's name?
Oneil is given almost entirely to boys in birth records.
How many syllables are in Oneil?
Oneil has 2 syllables.
When was Oneil most popular?
Oneil peaked in 1924, when 43 babies were given the name. It has been falling over the past decade.
Is Oneil a good name?
That is not something records can settle, but they can tell you what you would be choosing. Oneil currently ranks #10,687 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.