# O'Brien

> English word · Proper noun · IPA /əˈbɹaɪən/ · frequency rank #8,964

## Definitions
1. A surname from Irish.
2. A number of places in the United States:
3. A number of places in the United States:
4. A number of places in the United States:
5. A number of places in the United States:
6. A number of places in the United States:
7. A town in Buenos Aires province, Argentina, also known as Eduardo O'Brien.

## Etymology
Anglicisation of the Irish surname Ó Briain, meaning “descendant of Brian”.

## Common misspellings (9)
`'obrien`, `o'bbrien`, `o'biren`, `o'brein`, `o'brienn`, `o'brine`, `o'brrien`, `o'rbien`, `ob'rien`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/o-brien