Keogan
Keogan is an anglicized form of the Irish surname Mac Eochagain, which was wrongly corrupted to Ó Ceogáin. Notable people with the surname include:
- Christopher Keogan, English snooker player
- Donal Keogan, Irish Gaelic footballer
- George Keogan, American football, basketball and baseball coach
- Murray Keogan, Canadian ice hockey player
- Sharon Keogan, Irish politician