Surnames like O\'Reilly include cross-language cognates including Riley and Oreilly, others with a similar sound, like Rowley, and names that share its opening sound, such as O'Rourke, Orosco and O'Gallagher.

Overall

1. Riley (Reilly)
2. Oreilly
3. O'gallagher
4. O'moore
5. O'brien (Obrien)
6. O'neill (Oneal, Oneill, O'neil, Oneil)
7. O'sullivan (Osullivan)
8. Ryan
9. Murphy
10. Murray

Cognates

Names with the same meaning but not necessarily in the same language or format

• Riley, Reilly
• Oreilly

Alliterative names

Names that start with similar sounds to o\'reilly

• O'Rourke, Orourke
• Orosco
• O'Gallagher
• O'Moore
• O'Brien, Obrien
• O'Neill, Oneal, Oneill, O'Neil, Oneil
• O'Sullivan, Osullivan
• O'Connor, Oconnor
• O'Shea, Oshea
• Otero

Other names that contain similar sounds

• Riley, Reilly, Ryley, Rylie, Ryleigh, Rhyley
• Rowley

Names with similar tags

Tags include origins, well known people etc

• Jones
• Patterson
• Mccarthy
• Riley
• Watkins
• Hopkins
• Boyd
• Dawson
• Willis
• Davidson

Names with similar locations

Compares geographical origins and national popularity

• O'Ryan
• Mcallister
• Mccall
• Flanagan
• Curran
• Gilmore
• Mahoney
• Ferrell
• Oneill
• Costello

Names popular in similar years

Looks for trends from data about name popularity across the decades

• O'Sullivan
• Ross
• Owen
• Young
• Zhang
• Murray
• Graham
• Jenkins
• O'Doherty
• Patel