Finn person fra Tøyen
- Tommy Andre Olsen
- Trine Lystad Olsen
- Turid Olsen
- Ørjan Olsen
- Bo Sture Martin Olsson
- Marie-Louise Kristina Olsson
- Christian Olstad
- Kaia Martinsen Olsvold
- Luna Grønstad Oma
- Abdilhadi Omar
- Abdirahman Jeele Omar
- Abdirahman Omar
- Abdo Mohammad Omar
- Abdullahi Muse Omar
- Ahmed Omar
- Ahmed Omar
- Ahmed Mohamed Omar
- Halima Omar
- Hamid Omar Omar
- Hassan Zakaria Omar
- Hawal Omar
- Hussein Ibrahim Omar
- Jamila Abukar Omar
- Omar Ibrahim Omar
- Sabriin Abukar Omar
- Said Ali Omar
- Ubahle Omar
- Mohamed Ali Omer
- Zebiba Omer
- Zebiba Salim Omer
- Tewkal Omer Bahdon
- Ole Jørgen Ommundsen
- Hanna Kvam Omre
- Kristian Caro Alisbo Vedde Ona
- Thomas Onaji
- Jia Yun Ong
- Lilly Jeanette Onsrud
- Lawson Chima Onwenu
- Alexander Opdahl
- Merethe Helene Opdahl
- Vibeke Opheim
- Tracy Opoku
- Magne Oppen
- Ruby Oprita
- Even Opsal
- Steinar Opstad
- Welderufael Oqbamicael
- Trhas Michael Oqbu
- Sylvia Orkelbog
- Cecilie Orm
- Olav Eriksen Ormestøyl
- Mildre Orphee Suarez
- Mariafernanda Ortiz Franco
- Biniam Orubamikael
- Amadi Osas
- Mattias Dan Christian Oscarsson-Nagel
- Marte Risdal Osen
- Ida Haustreis Osflaten
- Dag Roar Oskal
- Tove Oskarsen
- Abdifatah Osman
- Abdirisak Osman
- Fahad Said Osman
- Fatima Osman
- Filiz Erdzhan Osman
- Habib Abdul Karim Osman
- Hamdi Osman
- Ibrahim Osman
- Marion Pettersen Osman
- Sabirin Abukar Osman
- Sahro Osman
- Saado Muse Osman
- Tahir Hamid Osman
- Yurub Hussein Osmann
- Abdi Osmaan
- Idun Osnes
- Mari Myrold Osnes
- Abdinassir Ali Ossoble
- Tetiana Ostapenko
- Marta Osuch
- Iren Oteka
- Othman Idrees Othman
- Rasha Idrees Othman
- Martin Ong'wen Otieno
- Idun Ottersen
- Thomas Bremnes Ottersen
- Donald James Otterson
- Rachid Ouarda
- Aicha Ouariaghli
- Moez Ouei
- Sid Ahmed Ouldcheikh
- Idrisse Oumar
- Anniken Overgaard
- Kjetil Skarsvåg Ovesen
- Lars Ovesønn Dalsegg
- Gareth James Lloyd Owan
- Alec Oyhenart
- Maria P
- Simen Palfi