O'Regan

• 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