Finn person fra Grønland
- Muhamed Ogric
- George Ohaufen
- Sjur Ohlen
- Arve Ohnstad
- Oindrilla Gangooly
- Alexandra Oinescu
- Alexandra Oinescu
- Franklin Ikechukwu Okafor
- Liv Okasha
- Felix Okoro
- John Okoye
- Benedikte Gyribye Olafsen
- Trond Olafsen
- Sara Berg Oland
- Elias Oluwafemi Olaribigbe
- Kristin Olaussen
- Stine Marie Olaussen
- Mario Andres Ahumada Olave
- Anders Solberg Olavesen
- Martin Olavesen
- Sven Daniel Arne Olbecker
- Memet Necat Olcay
- Oleksandra Hrybenko
- Elise Olerud
- Evelina Susanna Maria Annas Olofsson
- Andreas Olsen
- Eirik Utheim Olsen
- Frode Olsen
- Henry Olsen
- Inger-Reidun Olsen
- Ingull Johannes Olsen
- Ingve Olsen
- Jakob Berg Olsen
- Janne Aasgaard Olsen
- Jan Richard Olsen
- Jens Olsen
- Joacim Årstad Olsen
- Jonas Sebastian Schie Olsen
- Laila Therese Olsen
- Lena Olsen
- Madelaine Byremo Olsen
- Rune Olsen
- Rune Olsen
- Rungnapa Olsen
- Silje Skogland Olsen
- Stein Alexander Olsen
- Terje Nyborg Olsen
- Joakim Olsen
- Mia Olsen Leinan
- Kristin Hammer Olssen
- Jan Simon Emanuel Olsson
- Christopher Olssøn
- Nina Olymo
- Aden Yuusuf Omar
- Adirahman Ayub Omar
- Ahmed Omar
- Ahmed Abukar Omar
- Ayan Adan Omar
- Fowzia Abdulkadir Omar
- Hanad Omar
- Nasteho Omar
- Qasim Abukar Omar
- Said Ali Omar
- Sana Omar
- Sihaam Yousuf Omar
- Mohammad Gul Omarkhail
- Abdoulkader Omer
- Chaltu Omer
- Mohamed Musa Omer
- Mohanad Abdelkarim Omer
- Motile Omer
- Zoher Mahmod Omer
- Annette Lesley Ross Ommundsen
- Bibbi Omtveit
- Elisabeth Onarheim
- Morten Samsom Onarheim
- Honda One two five
- Merry Ong
- Olivia Ong
- Cristina Onguene
- Ståle Onsøien
- Kenneth Nadden Opdahl
- Irene Opdal
- Martin Opedal
- Christian Ophaug
- Morten Oddvar Ophaug
- Ruben Fjærestad Ophaug
- Ingunn Opland
- Ionut Daniel Oprea
- Leontin Oprea
- Jostein Altøy Opsahl
- Kjetil Opsahl
- Didrik Ragnar Opsal
- SE Opøien
- Sengul Orazali
- Vegard Orekåsa
- Agnieszka Lidia Organisciak
- Imranudin Oriakhel
- Tor Ormekleiv