Finn person fra Hakadal
- Lauritz Grønstad Olsen
- Magnus Hegle Olsen
- Martin Garbrandt Olsen
- Ragne Marit Olsen
- Rune Olsen
- Steffen Asarin Olsen
- Tom Morten Olsen
- Tone Merete Olsen
- Toni Lynn Garbrandt Olsen
- Tove Olsen
- Unni Olsen
- Vidar Olsen
- Raymond Lund Olsen-Storøy
- Trine Hasle Olsrud
- Jenny Anna Maria Olsson Picalausa
- Arild Magnar Olstad
- Astrid Gulden Olstad
- Hege Olstad
- Hege Synnøve Guttormsen Olstad
- Martin Olstad
- Petter Olstad
- Henning Olufsen
- Jan-Erik Olufsen
- Gunvor Omnes
- Signe Oorts-Vavik
- Elisabet Opheim
- Karin Fardal Opheim
- Magnus Bastian Opheim
- Eirik Opland
- Eirik Anette Flynn Opland
- Lillian Sofie Jester Opland
- Samuel Opoku
- Olga Orlova
- Pawel Orman
- Herdis Solveig Ormarsdottir
- Magnus Øverenget Ormaasen
- Knut Arild Oseid
- Oleh Osipov
- Maryan Osman
- Ernesto Jr Osorio
- Kostiantyn Osypchuk
- Harald Oterholt
- Svein Ottershagen
- Anne Karin Ottesen
- Beate Ottesen
- Kewalin Kosa Ottesen
- Svein Olav Ottesen
- Andre Ourom
- Herbjørg Oliva Ourom
- Vadym Ovchar
- Anne Torill Overen
- Lill Kjerstin Marthinsen Overen
- Per Andre Dolven Overen
- Ragnhild Dolven Overen
- Svein Magne Overen
- Tor Anton Dolven Overen
- Torunn Overen
- Andrea Owe
- Nirmalakanth Packiyarajah
- Katarina Palian
- Oleksandr Panchuk
- Konstantinos Papachronis
- Georgios Pappas
- Clasten Paramasivam
- Cecilie Paulsen
- Heidi Kristin Sem Paulsen
- Janicke Paulsen
- Marianne Wean Paulsen
- Ole Haakon Paulsen
- Amritbir Singh Pawar
- Mateusz Wiktor Pawlowski
- Katrina Paz
- Arve Pedersen
- Atle Pedersen
- Christer Pedersen
- Erik Pedersen
- Filip Pedersen
- Henrik Andre Pedersen
- Jan Lindhard Pedersen
- Kasper Trolle Yildiz Pedersen
- Lisbeth Dethloff Pedersen
- Malin Fredrikke Pedersen
- Margrethe Iren Pedersen
- Maria Elisabeth Pedersen
- Marit Øymoen Pedersen
- May-Britt Pedersen
- Ronald Pedersen
- Sandra Pedersen
- Terje Pedersen
- Øyvind Skogly Pedersen
- Marita Pedersveen
- Melissa Peltonen
- Satu Peltonen
- Reynaldo Reyes Pena
- Magnus Erik Persson Gjerde
- Magna Pessoa
- Sally-Ann Geary Petersen
- Arnold Petersheim
- Aina Helene Hustoft Pettersen