Finn person fra Ranheim
- Håkon Morstøl Nåvik
- Andreas Naavik
- Ida Marie Naavik
- Robert Brian O'Hara
- Nezar Ghassan Obaid
- Bjørn Peder Odden
- Marit Odden
- Unni Odden
- Anne Kristina Oddmundstad
- Gabriel Ofori
- Astrid Irene Ofstad
- Rein Thorvald Oftedal
- Solveig Oftedal
- Åshild Oftedal
- Inger Ohr Gustad
- Piret Ois
- Iuliia Okhota
- Maj Okkenhaug
- Andrejs Okolovics
- Karie Oksnes
- Eva Mari Okstad
- Peggy Okstad
- Trine Okstad
- Johan Olaussen
- Julie Olaussen
- Jan Olav Barø
- Linn Olden
- Markus Olden
- Johan Otto Oldernes
- Sofie Oldernes
- Anita Olderø
- Håkon Olesen
- Odleiv Olesen
- Lodve Hugo Olsborg
- Amanda Olsen
- Angela K Olsen
- Angela K. Olsen
- Annfrid Judith Olsen
- Annie Edith Marie Olsen
- Asbjørn Paul Nikolai Olsen
- Astrid Bergljot Olsen
- Bente Olsen
- Birger Olsen
- Baard Guldberg Olsen
- Camilla Harang Olsen
- Christian Eck Olsen
- Egil Olsen
- Elin Johanne Olsen
- Emilie Sivertsen Olsen
- Erik Thomsen Olsen
- Evelyn Kook Olsen
- Frank Alfons Olsen
- Fredrik Didriksen Olsen
- Geir Olsen
- Geir Olsen
- Henning Johan Olsen
- Henny Astrid Olsen
- Herold Olsen
- Hilde Maaø Olsen
- Inger Ann Olsen
- Ingrid Haug Olsen
- Ingun Olsen
- Iris Elgåen Olsen
- Jørgen Olsen
- Karen Haugom Olsen
- Knut Martin Olsen
- Kristine Alise Olsen
- Linda Pernille Olsen
- Maria Olsen
- Marit Schei Olsen
- Mia Berg Olsen
- Mia Olsen
- Nina Elgåen Olsen
- Nina Olsen
- Oddbjørn Arne Olsen
- Olaug Iren Olsen
- Olav Olsen
- Orit Olsen
- Per Kristian Olsen
- Randi Elisabeth Olsen
- Robert Olsen
- Roger Olsen
- Rolf Arne Bruun Olsen
- Sandra Kristine Olsen
- Sigfred Olsen
- Sigurd Ajer Olsen
- Stian Olsen
- Stine Dahl Olsen
- Sue-Cathrin Martinsen Olsen
- Svenn Ole Olsen
- Thor Olsen
- Tor Helge Olsen
- Tove Olsen
- Tove Beate Nergaard Olsen
- Trond Arve Olsen
- Vegard Olsen
- Frederic Olsen-Hagen
- Terje Holm Olson
- Liv Irene Olsrud