•
Brian O'Regan (disambiguation), several people •
Daniel O'Regan, New Zealand rugby league player •
Danny O'Regan, American ice hockey player •
Denis O'Regan, photographer •
Hana O'Regan, New Zealand Maori activist •
J. Kevin O'Regan, psychologist interested in phenomenal consciousness •
Kate O'Regan, South African lawyer and judge •
Katherine O'Regan, New Zealand politician •
Mark O'Regan, New Zealand judge •
Michael O'Regan (disambiguation), several people •
Patrick O'Regan, New Zealand politician and jurist •
Rolland O'Regan, New Zealand politician and surgeon •
Ron O'Regan, New Zealand rugby player •
Seamus O'Regan, Canadian politician and former broadcast journalist •
Susan O'Regan, New Zealand politician •
Tarik O'Regan, British composer •
Tipene O'Regan, New Zealand politician and educator •
Thomas O'Regan, Australian academic
Figures in the Catholic Church •
Anthony O'Regan, Catholic bishop •
Cyril O'Regan ==Places==