O'neil
BoyIrish
O'neil is a boy name of Irish origin meaning "champion".
About this name
Gender
Boy
Language
Irish
Religion
Christian
Syllables
2
Length
6 letters
Meaning
champion
Etymology
From Gaelic Ó Néill, meaning 'descendant of Niall', Néill being a given name of uncertain origin possibly meaning 'cloud' or 'passion'
Frequently Asked Questions About O'neil
What does the name O'neil mean?
O'neil means "champion", and is of Irish origin.
What is the origin of the name O'neil?
O'neil originates from Irish, commonly used in Ireland.
Is O'neil a boy or girl name?
O'neil is typically used as a boy name.
What religion is the name O'neil associated with?
O'neil is associated with Christian.
Last updated: June 2026