Finn person fra Romsås
- Laila Nykmark
- Berit Nyland
- Rune Nymoen
- Sandra Nymoen
- Knut Ingar Nyseth
- Else Nystrand
- Jan Nærmo
- Sille Kristiane Næsheim
- Andre Paul Næss
- Karin Næss
- Narine Næss
- Nicolae Adrian Oancea
- Nicolae Adrian Oancea
- Jonny Odden
- Olav Eide Odden
- Kirsten Ofrim
- Åge Ofrim
- Atle Oftedahl
- Rosanna Aquino Ogando
- Vivian Ohenewaah
- Hüseyin Okatan
- Meron Haile Okbe
- Chidi Okebata
- Christopher U Okoroafor
- Damian Okrutny
- Guri Amlund Olafsbye
- Martin Olafsen
- Maagdalena Olahova
- Terje Olaussen
- Rikke Oldemark
- Anne Marit Olsen
- Ann Kristin Olsen
- Bengt Olav Olsen
- Bjørg Marie Olsen
- Erik Olsen
- Finn Erik Olsen
- Geir Halvor Riis Olsen
- Johnny Olsen
- Kjell Ove Olsen
- Lars Olsen
- Mananya Olsen
- Marie Oldemark Olsen
- May-Britt Olsen
- Monica Wold Olsen
- Morten Andre Olsen
- Ragnar Eugen Olsen
- Reidun Gunvor Olsen
- Simen Olsen
- Steinar Olsen
- Tom Olsen
- Tore Olsen
- Tor Kristian Olsen
- Turid Synnøve Olsen
- Unni Olsen
- Elvy Anita Olsson
- Ali Omar
- Daud Omar
- Salma Omar
- Hasan Omerhodzic
- Jasmina Omericic
- Donald Radoli Omondi
- Ana Marie Agudelo Onnagan
- Nhicole Onnagan
- Øystein Onstad
- Chika Onyekwere
- Lucie Onyekwere
- Thein Oo
- Svanhild Irene Stang Opakersund
- Hans Einar Oppegård
- Rune Opperud
- Åse Opperud
- Georgiana Adriana Oprea
- Karianne Igelkjøn Opsahl
- Ida Lein Opsahlseter
- Petter Opsahlseter
- kjersti opstad
- Anne Brit Opstad
- Connie Adèle Kouakou Opstad
- Ole Viktor Opstad
- Trine Iren Opstad
- Vigdis Margrethe Opåsen
- Cristian Gonzalo Suarez Ortiz
- Luz Stefania Perez Ortiz
- Jenderi Corina Oryan Salazar
- Sandra Osaren Osazuwa
- Arhin Osei
- Michelle Princess Osei
- Igor Osiemnicki
- Abdimalik Osman
- Borys Osypenko
- Ingar Ottesen
- Driss Ouhassi
- Laila Ouhassi
- Latifa Oulkadi
- Ouafaa Oulkadi
- Ruth Mary Owusu
- Zuhal Pa
- Henry Belen Padillon
- Alexandru Paladuta