Finn person fra Tåsen
- Aase Marie Olafsen
- Mette Harpestad Olborg
- Ellen Mossin Olesen
- Olha Levchenko
- Viacheslav Oliinyk
- Tauana Paulo de Oliveira
- Eva Olsbakk
- Ester Bergljot Olsborg
- petter olsen
- Amalie Signy Olsen
- Andreas Hajanirina Fiderana Olsen
- Annikken Olsen
- Cecilie Margrethe Olsen
- Eivind Ajer Olsen
- Frode Olsen
- Geir Thomas Olsen
- Hanna Selmer - Olsen
- Håkon Thomas Olsen
- Janne Kristin Olsen
- Karianne Femtehjell Olsen
- Karoline Olsen
- Kenneth Olsen
- Marianne Olsen
- Monica Olsen
- Ole-Jakob Olsen
- Ottar Cato Olsen
- Thea Cecilie Olsen
- Therese Olsen
- Vegard Olsen
- Tone Olsen Moberg
- Marianne Olson
- Morris Kyrre Hovde Olson
- Linda Olstad
- Paal Olstad
- Tommy Olstad
- Bernt Olufsen
- Ruben Oma
- Knut Arne Omberg
- Tuva Omberg
- Therese Omdahl
- Irfan Omeragic
- Ghulam Mujtaba Omid
- Katrine Ommang
- Mari Ommundsen
- Nina Ommundsen
- Stein Erik Ommundsen
- Frode Morten Onarheim
- Une Lorentze Onarheim
- Øivin Onarheim
- Malin Buvarp Ones
- Kristin Bertling Opdahl
- Bente Opdal
- Espen Grindeland Opheim
- Leif Runar Opheim
- Paul Jone Opheim
- Haakon Opperud
- Marianne Opperud
- Joseph Oppong Ninson
- Lars Rune Opsahl
- Nina Opsahl
- Siw-Anita Rønnevig Opsahl
- Stine Standal Opsahl
- Svein Bjørnsen Opsahl
- Hans-Christian Opsann
- Vibeke Varborg Opsann
- Anton Opstad
- Sonia Opsvik
- Marit Catherine Orhagen
- Eli Ormerod
- Gloria Osas
- Alcy Amalie Oshaug
- Laila Sally Oskarsen
- Terje Andreas Osnes
- Øyvind Osnes-Ringen
- Lucia Rebeca Otero
- Mats Arne Ottdal
- Erik Olai Otterbech
- Roald-Einar Ottersen
- Ann-Christin Bergljot Janes Ottervang
- Geir Ottervang
- Inger-Johanne Ottervang
- Ane Kristin Ottestad
- Marit Ottestad
- Per Marcus Ottestad
- Tora Bjørndal Ottestad
- Inga-Marita Ottosson
- Abdallah Ouafik
- Thorstein Ouren
- Eivind Overholt
- Grethe Overvik
- Aleksander Owren
- Mari Owren
- Magdalena Katarzyna Pach
- Saman Hasan Palani
- Bitte Bye Palm
- Karl Johan Palm
- Berit Elisabet Palmer
- Rolf Erlend Palmer
- Jakob Palmers