Finn person fra Bryn
- Jamal Ofkir
- Mekonnen Ogbazion
- Odin Ohrvik
- Peter Ojaga Odiel Ojulu
- Peter Ojulu
- Katarzyna Anna Okas
- Okash Shire
- Piotr Okoniewski
- Oksana Pelyk
- Erik Okstad
- Per Morten Olafsen
- Jan Olaussen
- Violet Jasmin Olaussen
- Marius Olavesen
- Marte Olborg
- Liv Older
- Thomas Older
- Emilie Oldervik
- Arne Åsmund Olerud
- Ingolf Oliver
- Carl Mats Lennart Olofsson
- Roy Andre Olsberg
- Linda Olsbø Hansen
- Arne Karsten Olsen
- Christian Olsen
- Ester Nikoline Olsen
- Ida-Merethe Rogne Olsen
- Idar Olsen
- Inger Marion Olsen
- Ingjerd Karin Olsen
- Jan Ove Olsen
- Jonas Olsen
- Jon Håkon Olsen
- Karin Elisabeth Olsen
- Kjell Wilhelm Olsen
- Martin Olsen
- Nono Barros Olsen
- Ove Morgan Olsen
- Pål Olsen
- Rasmus Olsen
- Rasmus Sylvester Olsen
- Richard Olsen
- Roar Olsen
- Robin Olsen
- Roy Anker Olsen
- Runar Olsen
- Simen Andrè Wesley Olsen
- Solgunn Hennie Olsen
- Sondre Uteng Olsen
- Stein Jarle Olsen
- Sven-Arild Olsen
- Vegar Hammer Olsen
- Vigdis Aas Olsen
- Viktoria Iselin Ødegaard Olsen
- Wenche Olsen
- Arild Olsen-Banden
- Daniel Rene Olsen-Hagen
- Johan Pien Emil Olsson
- Petra Maria Landberg Olsson
- Venche Olsson
- Barbara Olszewska
- Kjell Bjørnar Olufsen
- David Thompson Olusow
- Mahammed Hussein Omar
- Yussuf Abdi Omar
- Alan Omarzada
- Izi Omoju
- Ingeborg Onstein
- Anne Derkje Johanna Oortwijn
- Nils Oortwijn
- Odiel Opara
- Martin Hovemoen Ophaug
- Ole Johannes Opheim
- Jostein Oppegård
- Frode Opsahl
- Grethe Rigmor Opsahl
- John Opsahl
- Kristine Opsahl
- Ole Roar Opsahl
- Terje Opsahl
- Magnar Opsal
- Miroslava Opsal
- Kamil Mieczyslaw Oracz
- Rodrigo Ordenes
- Kirsten Oredsen
- Angelo Gunerius Orlandi
- Per Øyvind Ormset
- Henrik Orre
- Iczel Lorena Ortiz Benitez
- Kristin Os
- Tomas Oscarsson
- Anne-Marthe Due Ose
- Michal Osinski
- Abdelsalam Osman
- Abdi Osman
- Abdi Kadir Abdullahi Osman
- Abdirahman Ali Osman
- Kwestan Osmani
- Herman Ostad