| Olden Oppdrettsanlegg AS | Agriculture & fishing | 1998 |
| Oldenselskapene AS | Real estate | 1992 |
| Ole Løvold AS | Manufacturing | 1980 |
| Oppi Garden Da | Agriculture & fishing | 2018 |
| Orfjord AS | Agriculture & fishing | 2021 |
| Oriented Group AS | Information & communication | 2018 |
| Oriented Soft AS | Information & communication | 2019 |
| Oriented Venture AS | Wholesale & retail | 2020 |
| Orthopadie-Schuhtechnik/Prologie Albrecht Schellenberger | Manufacturing | 2010 |
| Otter AS | Professional & scientific | 2025 |
| Otterlei Holding AS | | 2019 |
| Outstaffing Venture AS | Information & communication | 2019 |
| Ovejo AS | | 2020 |
| P.Kaillinvest AS | | 2023 |
| Pcmakeren AS | Other services | 2020 |
| Peder B Sørvik AS | Manufacturing | 1999 |
| Peder B Sørvik Eiendom AS | Manufacturing | 1999 |
| Per M Aandahl AS | | 2023 |
| Perfekt Gjort AS | Administrative & support | 2014 |
| Perlemor Gårdsbutikk AS | Wholesale & retail | 2024 |
| Pilotveien 11 Hjelpeselskap AS | | 2026 |
| Pilotveien 11 NR 13 AS | Real estate | 2026 |
| Pilotveien 6 AS | Real estate | 2025 |
| Pkaa Invest AS | | 2023 |
| PKB AS | Financial services | 2013 |
| PM Utleie AS | Transport & logistics | 2017 |
| Portomex AS | Hospitality | 2022 |
| Posicom AS | Information & communication | 2000 |
| Prikken Averøy AS | Wholesale & retail | 1997 |
| Procyon AS | Real estate | 2025 |
| PT Hjem Kippernes AS | Education | 2023 |
| Pure Norwegian Seafood AS | Manufacturing | 2010 |
| QJ Restauranten Ans | Hospitality | 2005 |
| Quo Vadis - Bodycenter AS | Arts & recreation | 2009 |
| Ramsøy Brygger AS | Real estate | 2009 |
| Ramsøy Investment AS | | 2022 |
| Ramsøy Vekst AS | | 2005 |
| Rangøya Internasjonale Kultursenter AS | Arts & recreation | 2024 |
| Rapuma AS | Hospitality | 2024 |
| Ravi Holding AS | | 2023 |
| Redox AS | Professional & scientific | 2004 |
| Reeaq AS | Wholesale & retail | 2022 |
| Reiret Holding AS | | 2026 |
| Reiret Utleie AS | Hospitality | 2021 |
| Reksundveien 119 AS | Real estate | 2022 |
| Rensefisk AS | Agriculture & fishing | 2016 |
| Retreats AS | Professional & scientific | 2025 |
| Robekk AS | Real estate | 2019 |
| Roge AS | Professional & scientific | 2017 |
| RS Kapital AS | Financial services | 2015 |
| Rå Sjømat AS | Wholesale & retail | 2019 |
| Rånes Småbåtlag SA | Arts & recreation | 1994 |
| Røsand Familiebarnehage Ans | Education | 1996 |
| Røsand Invest AS | Construction | 2005 |
| Røsandveien AS | Real estate | 1979 |
| Røve Invest AS | Real estate | 2014 |
| Røsand Eiendom A/S | Real estate | 1986 |
| S Farstad Holding AS | | 2023 |
| Samey Robotics AS | Wholesale & retail | 2022 |
| Sandø Holding AS | Agriculture & fishing | 2021 |
| Sandøy Trål AS | Agriculture & fishing | 2018 |
| Saot Holding AS | | 2024 |
| Scisco AS | Financial services | 2014 |
| Sea Sport Yacht AS | Transport & logistics | 2015 |
| Seaquest Norway AS | Wholesale & retail | 2021 |
| Seifjord Trans AS | Transport & logistics | 2003 |
| Setra Bruk Ans | Agriculture & fishing | 2019 |
| Setran Settefisk AS | Agriculture & fishing | 2021 |
| SG Metallteknikk AS | Manufacturing | 2008 |
| SGX Dvlop AS | Information & communication | 2012 |
| Sigurd Folland AS | Manufacturing | 1983 |
| Sikkert Miljø AS | Health & social care | 2012 |
| Simlounge AS | Arts & recreation | 2026 |
| Sirø Invest AS | Manufacturing | 2006 |
| Sjark Og Poesi AS | Financial services | 2017 |
| Sjøhuset I Sveggesundet Ans | Hospitality | 2005 |
| Sjølyst Investering AS | Real estate | 2010 |
| Skarhøgda Boligfelt AS | Real estate | 2012 |
| Skarset Holding AS | Real estate | 2019 |
| Slikkepott.No AS | Wholesale & retail | 2014 |
| Sm-Multiservice AS | Construction | 2023 |
| Smask AS | | 2023 |
| Smenes Dykkerservice AS | Agriculture & fishing | 2021 |
| Smenes Marine Service AS | Agriculture & fishing | 2020 |
| Smenessundet Småbåtlag SA | Transport & logistics | 1991 |
| Smith-Kongshaug Holding AS | Information & communication | 2022 |
| Sol Eiendom Langøyneset AS | Real estate | 2012 |
| Solstrand Eiendom Da | Real estate | 1997 |
| Somnium Invest AS | Financial services | 2014 |
| Spoiq Technologies AS | Information & communication | 2015 |
| Stabukken Gårdsbarnehage Ans | Education | 1997 |
| Stangarodden AS | Real estate | 2006 |
| Steinar Laugsand Holding AS | Professional & scientific | 2022 |
| Storm Investo AS | Real estate | 2022 |
| Storm Marine AS | | 2019 |
| Stormfuglen Holding AS | | 2018 |
| Storsild Nuf | Construction | 2008 |
| Strykjernet AS | Real estate | 1998 |
| Styrels AS | Real estate | 2023 |
| Superhelt AS | | 2021 |