O'Regan
O'Regan can refer to:
- O'Regan's, Newfoundland and Labrador, a village in Newfoundland, Canada
- Anthony O'Regan, a Catholic bishop
- Denis O'Regan, a renowned photographer
- J. Kevin O'Regan, a psychologist interested in phenomenal consciousness
- Kate O'Regan, a South African lawyer and judge
- Katherine O'Regan, a former New Zealand politician
- Mark O'Regan, a New Zealand judge
- Michael O'Regan, co-founder of Research Machines
- Seamus O'Regan, a Canadian politician and former broadcast journalist
- Tarik O'Regan, a British composer
- Brian O'Regan, American chemist co-inventor of Dye-sensitised solar cells
- Brian O'Regan, Gaelic footballer
- Daniel O'Regan, New Zealand rugby league player
- Danny O'Regan, American ice hockey player