Svend Erik Olesen till Ole Jørgen Olsbu
- Svend Erik Olesen - Tore Egil Olesen
- Turid Wenche Olesen - Larchuk Olesia
- Damian Olesiak - Varmo Olesk
- Pavels Olesks - Beret Olesrud
- Grete H Hømandberg Olesrud - Signe Aslaug Olesrud
- Sigvald Olesrud - John Harry Olestad
- Jørn Olestad - Ståle Olestad
- Sverre Olestad - Dorota Oleszczuk
- Jerzy Oleszczuk - Szymon Oleszek
- Iwona Dorota Oleszkiewicz - Elin Olevik
- Liv Olevik - Danuta Ewa Olewnik
- Maciej Olewnik - Anthony Olffor
- Britt Hjørdis Olfot - Brian Cliff Olguin
- Lee Steve Olguin - Kristina Elisabet Olhans
- Ilyas Ahmed Olhaye - Bjørge Oliegreen
- Elisabeth Stefanie Oliegreen - Vitalii Oliinyk
- Valeriia Oliinykova - Rose Dawa Olike
- Gadisa Oliksa - Bjørn Olimb
- Didrik Olimb - Helene Hillkirk Olimb
- Helge Olimb - Lars Olimb
- Lars Jakob Olimb - Morten Olimb
- Nathalie Dyhr Olimb - Thea Gjestvang Olimb
- Thor Olimb - Arnfinn Olimstad
- Arnfinn Olimstad - Eli Janne Kløvfjell Olimstad
- Else Bente Olimstad - Jon Helmert Olimstad
- Jorunn Tveite Olimstad - Markus Olimstad
- Mona Olimstad - Tor Kjell Olimstad
- Torbjørg Skretting Olimstad - Johan Olin
- Kai-Arne Olin - Lienite Olina
- Lienite Olina - Andriejus Olisko
- Andriejus Olisko - Nelly Fe Cabahug Olivar
- Ronelyn Olivar - Irma Teresa Juica Olivares
- Juana Lopez Olivares - Victor Silva Olivares
- Aline Olivas Kaji - Celia Maria Felix De Oliveira
- Charles Felipe Goncalves De Oliveira - Fernando Oliveira
- Tania A M Oliveira Filha - Madelena De Oliveira
- Manuel Carlos Faria De Oliveira - Rosangela Maximo De Oliveira
- Rosangela Maximo De Oliveira - Carsten Oliver
- Consuelo Oliver - James Brian Oliver
- Joana Marie Masiglat Oliver - Turi Gramstad Oliver
- Øivin Oliver - Marichu Bahian Oliverio
- Marichu Bahian Oliverio - Alf Inge Oliversen
- Anders Foldøy Oliversen - Bjørn Johan Oliversen
- Bjørn Johan Oliversen - Ellen Marie Gilje Oliversen
- Espen Oliversen - Henriette Rytterager Oliversen
- Hermann Rytterager Oliversen - Jan Roger Oliversen
- Jan Åge Oliversen - Kim Roger Oliversen
- Kjell Arve Oliversen - Lise Cathrin Oliversen
- Liv Hulda Oliversen - Marius Oliversen
- Markus Oliversen - Ragnhild Otnes Oliversen
- Reidar Oliversen - Svein Georg Oliversen
- Svein Helge Oliversen - Tove Fossum Oliversen
- Vidar Oliversen - Couqelin Olivier
- Grisel Olivier - Teodor Oliviu
- Antonio Olivo - Mataie Oliwnik
- Elham Oliyaei - Philip Olk
- Phillip Sebastian Olk - Pertti Juha Olkkonen
- Anna Olko - Torbjørn Oll
- Halvard Ollai - Sigge Ollendorff
- Tine Ollendorff - Arild Ollestad
- Arild Ollestad - Cecilie Ollestad
- Else Johanne Ollestad - Karen Monge Ollestad
- Kari Ollestad - Per Helge Ollestad
- Renate Ollestad - Stina Ollestad
- Svein Ollestad - Valery Ollfirenko
- Magnus Ollfors - Hans Magnus Olli
- Ivar Martin Olli - Sofie Emilie Olli
- Svein Ole Olli - Elin Cecilie Ollila
- Geir Edvin Ollila - Kurt Ragnar Ollila
- Leif Eivind Ollila - Jussi Ollino
- Martin Ollino - Alva Margareta Ollum
- Kaltrina Olluri - Torill Olme
- Mariana Alejandra Olmeda - Fernandez Olmo
- Fernandez Olmo - Juan Andres Olmos
- Natacha Galarroza Olmos - Margarita Olnova
- Raivo Olo - Alexandra Katherine Olofsson
- Anders Olofsson - Britt Kristina M Olofsson
- Børje Olofsson - Erik Peter Lennart Olofsson
- Erik Rasmus Olofsson - Helen Olofsson
- Hilde Kristiansen Olofsson - Johan Fredrik Olofsson
- Johan Nichlas Olofsson - Lena Hammer Olofsson
- Lena Yvonne Olofsson - Matilda Helena Olofsson
- Mats Olofsson - Oskar Josef Olofsson
- Oskar Sebastian Olofsson - Sharon Mcinnes Olofsson
- Sigurd Olofsson - Ulf Olofsson
- Ulf Olofsson - Fatmir Olomani
- Muhamed Olomani - Ida Maria Olossdottir
- Komlan Samuel Olou - Abdullahi Olow
- Abdullahi Olow - Ane Mari Olrud
- Ann Kristin Blom Olrud - Anders Olsaker
- Geir Olsaker - Anders Olsbakk
- Anne Lise Olsbakk - Jan Arnfinn Olsbakk
- Kim Asbjørn Olsbakk - Anne-Berit Olsberg
- Arne Olsberg - Ivar Olsberg
- Jonas Ødegården Olsberg - Åge Olsberg
- Åge Olsberg - Cathrine Olsborg
- Dagfinn Eyolf Olsborg - Eline Olsborg Hansen
- Heidi Olsborg - Kristian Dahle Olsborg
- Kristin Olsborg - Ragna Olsborg
- Ragnhild Olsborg - Ted Jørund Olsborg
- Thorleif Olsborg - Ole Jørgen Olsbu