| Rønvik Invest AS | Real estate | 2011 |
| Rønvik Veiservice AS | Wholesale & retail | 1995 |
| Rønvik Veiservice Eiendom AS | Real estate | 2018 |
| Rønvikfjæra AS | Real estate | 2003 |
| Rønvikkiosken AS | Professional & scientific | 2022 |
| Rønvikveien 51 AS | Real estate | 2009 |
| Rønvikveien 9 AS | Real estate | 2001 |
| Rønvikveien AS | Real estate | 2025 |
| Rørlegger Arnt Vegar AS | Construction | 2025 |
| Rørleggermester Bård Karlsen AS | Construction | 2019 |
| Rørleggermester Stian Larsen AS | Construction | 2012 |
| Rørmek AS | Construction | 2012 |
| RÚN AS | | 2026 |
| S Johansen Holding AS | Financial services | 2017 |
| S&K Hammer Invest AS | Construction | 2022 |
| S.Engen Holding AS | Other services | 2022 |
| S5BO AS | Real estate | 2024 |
| Sa-Anlegg AS | Construction | 2025 |
| Sabrura City Nord AS | Hospitality | 2025 |
| Safe Comfort AS | | 2016 |
| Safe Works AS | Information & communication | 2023 |
| Salay AS | | 2021 |
| Saldi Markan AS | Real estate | 2022 |
| Salene AS | | 2023 |
| Salesmate AS | Information & communication | 2026 |
| Salmon Center AS | Agriculture & fishing | 1999 |
| Salomonsen Invest AS | | 2005 |
| Salongen Din AS | Other services | 2010 |
| Salt Marine Nord AS | Administrative & support | 2015 |
| Salta Bolig AS | Real estate | 2016 |
| Saltbrygga AS | Real estate | 2025 |
| Salten Alarm AS | Wholesale & retail | 2013 |
| Salten Algae AS | Wholesale & retail | 2017 |
| Salten Bar Drift AS | Hospitality | 2017 |
| Salten Cruise AS | Transport & logistics | 1999 |
| Salten Distribusjon AS | Transport & logistics | 2024 |
| Salten Eiendom AS | Real estate | 2012 |
| Salten Elektro AS | Construction | 2020 |
| Salten Friteater SA | Arts & recreation | 2021 |
| Salten Hotell AS | Real estate | 2019 |
| Salten Invest AS | Professional & scientific | 2005 |
| Salten Malerservice AS | Construction | 2025 |
| Salten Maskin AS | Construction | 2015 |
| Salten Omsorg AS | Health & social care | 2012 |
| Salten Prehospitale Tjenester AS | Transport & logistics | 2025 |
| Salten Regnskapslag SA | Professional & scientific | 1970 |
| Salten Rengjøring AS | Administrative & support | 2005 |
| Salten Rib AS | Arts & recreation | 2007 |
| Salten Salmon AS | Manufacturing | 2017 |
| Salten Shipping AS | Transport & logistics | 2010 |
| Salten Snekkerservice AS | Construction | 2016 |
| Salten Trafikkskole AS | Education | 2024 |
| Salten Tungberging AS | Transport & logistics | 2022 |
| Salten Varetaxi AS | Transport & logistics | 1999 |
| Saltenfisk AS | Manufacturing | 2023 |
| Saltens Damp Eiendom AS | Real estate | 2013 |
| Saltens Dampskibsselskab AS | Transport & logistics | 2024 |
| Saltens Gruppen AS | Transport & logistics | 1937 |
| Saltfjord Holding AS | | 2024 |
| Sambogården AS | Real estate | 2011 |
| Samfab Consulting AS | Wholesale & retail | 2013 |
| Samfunnsverk AS | Education | 2025 |
| Samvirkeforetaket Befalsfruene Bodø Garnison SA - Bamsebo Barnehage | Education | 1989 |
| Sandgata 3 AS | Real estate | 2024 |
| Sandgata Eiendom AS | Hospitality | 1970 |
| Sandgata Servering AS | Hospitality | 2018 |
| Sandhorngata 39 AS | Real estate | 2017 |
| Sandhorngata Eiendom AS | Real estate | 2017 |
| Sandhornøy Maskin AS | Construction | 2011 |
| Sandhornøy Utvikling AS | Real estate | 2015 |
| Sandvik Advokatfirma AS | Professional & scientific | 2024 |
| Sara Elise Nails AS | Other services | 2024 |
| Sarpsborg Boligutvikling AS | Real estate | 2015 |
| Sawasdee Thaimassasje - Bodø AS | Health & social care | 2026 |
| SB Transport AS | Transport & logistics | 1986 |
| SBF Invest AS | | 2023 |
| SBR Eiendom AS | Real estate | 2018 |
| Scandi Motors AS | Wholesale & retail | 2023 |
| Scandic Skin Lab AS | Manufacturing | 2019 |
| Schips AS | | 2022 |
| Scoops AS | Wholesale & retail | 2011 |
| SE Frem AS | | 2025 |
| Sea More Advntures AS | Transport & logistics | 2026 |
| Sea Raft Lofoten Ans | Transport & logistics | 2001 |
| Seabird Eiendom 1 AS | Real estate | 2020 |
| Seabird Eiendom 2 AS | Real estate | 2020 |
| Seabird Eiendom AS | Construction | 2011 |
| Seabird Næringseiendom AS | Real estate | 2023 |
| Seabird Næringsutvikling AS | Real estate | 2014 |
| Seabreeze Invest AS | Wholesale & retail | 2014 |
| Seabuddy AS | Agriculture & fishing | 2022 |
| Seaspeed AS | Education | 2023 |
| Seb Investment AS | Financial services | 2015 |
| Sedeniussen Eiendom AS | Real estate | 2021 |
| Seder Bakeriet AS | Wholesale & retail | 2025 |
| Seines AS | Transport & logistics | 1997 |
| Selforsveien 14 AS | Real estate | 2024 |
| Semcon Nord AS | Construction | 1997 |
| Senlet Holding AS | | 1958 |
| Senm AS | | 2022 |