Finn person fra Nordstrand
- Erik Nårstad
- Thor O
- Michael James O'Donnell
- Barbara Oberländer
- Gabriela Julia Obrzut
- Wiktor Stefan Obst
- Rory Michael Oconnor
- George Wilson Ocran
- Mia Therese Mordt Oddvang
- Roberth Svendsen Offerdal
- Arne Ofstad
- Bjørn Ofstad
- Erling Olav Ofstad
- Geir Ofstad
- Marianne Wilmar Oftedahl
- Sunniva Franciska Oftedahl
- Terje Anders Oger
- Lilith Ohlsson
- Anne Berit Austheim Ohme
- Silje Ohnstad
- Bård Okkelmo
- Lisbeth Signe Okkelmo
- Faten Okla
- AM Okna
- Bjørn Oksnes
- Sven Ove Oksvik
- Hilde Olafsen
- Kaja Lunder Olafsen
- Roger Olafsen
- Simen Tore Olafsen
- Thomas Olafsen
- Villy Iver Olaisen
- Mario Gomez Olalla
- Martin Olaussen
- Eirik Olavson
- May Evelyn Carlsson Olavson
- Per Olavson
- Magnus Olden
- Arturas Oleinik
- Oleksandra Oliinyk
- Mats Olimb
- Alicia Evelina Oliversson
- Anne-Karin Olsby
- Anette Olsen
- Anne-Lise Olsen
- Arild Olsen
- Berit Lise Olsen
- Bjørn Thore Olsen
- Eina Ingrid Olsen
- Elisabeth Lykke Olsen
- Emilie Vathne Olsen
- Eva Olsen
- Even Olsen
- Hanna Roen Olsen
- Helge Olsen
- Herman Vathne Olsen
- Jan Andre Olsen
- Jarl Torris Olsen
- Jeanette Olsen
- Kaja Olsen
- Karin Synnøve Olsen
- Kine Espelid Olsen
- Laila Olsen
- Linda Helen Olsen
- Marthe-Celine Fjeld Olsen
- May Lisbeth Olsen
- Nina Schyberg Olsen
- Oddvar Hillestad Olsen
- Pia Hasdahl Olsen
- Sebastian Olsen
- Silje Lundstrøm Olsen
- Sondre Uteng Olsen
- Tone Fugland Olsen
- Trine Else Olsen
- Victoria Elise Olsen
- Vigdis Elisabeth Olsen
- Willy Olsen
- Toril Henriksen Olset
- Bo Tommy Olsson
- Lena Mari Olsson
- Adele Olsson Rasmussen
- Marit Jannecke Olstad
- Pawel Olszewski
- Olav Oma
- Stine Oma
- Rajab Omar
- Hans Andreas Omland
- Merethe Helmo Opdal
- Kjell Håkon Opheimshaugen
- Tonje Gudmundsdatter Stenersen Opheimshaugen
- Anne-Mette Platou Ophus
- Morten Ophuus
- Leif-Victor Oppedal
- Marit Waage Oppedal
- Randi Oppedal
- Ylva Oppedal
- Erica Frisk Oppheim
- Ole Petter Opprann
- Adrian-Lucian Oprea