Oneill
Boy nameOneill has been given to 87 babies in the U.S. since 1918. It peaked in 2010.
Popularity over time births per year, 1880–2025
Total babies
87
Peak year
2010 (8 babies)
Rank in 2025
Below top 1000
First recorded
1918
10-year trend
New / returning
Gender split
All boys
Names with a similar vibe
Same primary gender, peaked around the same years, and roughly as common as Oneill.
Sibling name ideas for Oneill
Same era and popularity as Oneill, avoiding matching initials or rhymes.
FAQ
How popular is the name Oneill?
Oneill has been given to 87 babies in the U.S. since 1918. It ranked below the top 1000 in 2025.
When did the name Oneill peak?
Oneill peaked in 2010, when 8 babies were given the name.
Is Oneill a girl or boy name?
Oneill is primarily a boy name (100% of babies named Oneill are boys).
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