Finn person fra Sinsen
- Patrik Holmedal Storm Olsen
- Roger Olsen
- Sven-Erik Olsen
- Therese Olsen
- Tom Erik Olsen
- Tom Jin Olsen
- Karoline Olsrød Jørgensen
- Daniel Lennart Olsson
- Fredrik Olstad
- Ingeborg Olstad
- Ahmet Olt
- Maren Johanne Olufsen
- Ibrahim Adan Omar
- Kaire Omar
- Khadar Omar
- Mona Omar
- Salah Ali Omar
- Sulekha Ali Omar
- Thanaa Omar
- Omar Omara
- Egon Omark
- Nikolai Nordnes Omdahl
- Frithjof Omejer Skottun
- Erna Omeragic
- Hana Omeragic
- Rikard Noer Omfjord
- Erling Onstad
- Kassim Rashid A Oomaar
- Georg Olav Opdahl
- Kenneth Nadden Opdahl
- Lotte Opdal
- Terje Haugland Opdal
- Tor Erik Opdal
- Astri Ljung Opedal
- Herman Opedal
- Kjetil Ljung Opedal
- Per Sverre Opedal
- Cecilie Opheim
- Kristina Opsahl
- Nina Irene Opsahl
- Isabel Opseth
- Stine Slang Opsund
- Madeleine Herring Orby
- Pablo Alejandro Orduz Arenas
- Therese Normann Orkelbog
- Raul Estiven Orozco Saltos
- Sebastian Pietschmann Orre
- Sissel Iren Orstein Wiik
- Herman Orsten
- Nils-Hogne Os
- Anita Osas
- Hilde Osgjerd Rekve
- Abbas Abdirahman Osman
- Abdelgader Osman
- Abdirisaq Abdullahi Osman
- Ali Osman
- Bahtie Lyutfi Osman
- Faisal Mohammed Osman
- Hassan Osman
- Hassan Sheik Abdirahim Sheik Osman
- Ibrahim Osman
- Khadra Osman
- Mohammad Ali Osman
- Omar Hussein Osman
- Zeinab Muhammad Ali Osman
- Pia Osmundsen Nilsen
- Kristoffer Tomter Osnes
- Gerald Moshi Oswald
- Egil Otter
- Ben Rabah Ouahid
- Wissal El Ouasdi
- Lasse Oug
- Anne Lise Oulie
- Rune Ovesen
- Benson Owino
- Sandrine Dieudonne Owono
- Marian Owusu
- Usenbor Oyenmwen Jessica
- Harpreet Singh Padda
- Misha Janet Paddon
- Jacopo Paglia
- Sevasti Aambø Pahis
- Tatiana Pakshaeva
- Claudio Paliotta
- Krzysztof Franciszek Palka
- Henrik Palm
- Kamal Paneru
- Astrid Susanne Pantin-Skjold
- Silje Panzer
- Ioannis Pappas
- Maria-Jose Parada
- Ratnesan Paramu
- Alma Pascual
- Arvin Patel
- Davina Kaur Patel
- Dagmara Maria Pater
- Madu Pathmarajah
- Vihang Vilas Patil
- Bassel Paul