| Snake Oil Shipholding AS | Administrative & support | 2025 |
| Snas Invest AS | | 2018 |
| Snekkerbjørn AS | Construction | 1997 |
| Snekkern AS | Construction | 2019 |
| Snes AS | Real estate | 2005 |
| Snn-Bygget AS | Real estate | 2019 |
| Snos Bodø AS | Wholesale & retail | 2025 |
| SNX AS | Wholesale & retail | 2011 |
| Snøtind Invest AS | Professional & scientific | 2019 |
| Snøtind-Eiendom AS | Real estate | 2020 |
| So-Vi AS | Education | 2019 |
| Sola Media AS | Information & communication | 2018 |
| Solhaugen Prosjekt AS | Real estate | 2018 |
| Solhol AS | Real estate | 2014 |
| Solid Rock Adventures Europe Da | Arts & recreation | 2003 |
| Solinor AS | Other services | 2010 |
| Solsiden AS | Real estate | 2002 |
| Solsnekkeren AS | Real estate | 2012 |
| Solstad AS | Health & social care | 2026 |
| Soltun Gård Ans | Arts & recreation | 2011 |
| Solve-It AS | Information & communication | 2016 |
| Solvikhaugen AS | Real estate | 2020 |
| Somare AS | Health & social care | 2019 |
| Something From Nothing AS | | 2026 |
| Somevibe AS | Professional & scientific | 2023 |
| Soulwork AS | Health & social care | 2017 |
| Sound Investments AS | Wholesale & retail | 2019 |
| SP Tjenester AS | Construction | 2021 |
| Spaceguide AS | Professional & scientific | 2022 |
| Spatrend Nord AS | Other services | 2013 |
| Specships Da | Wholesale & retail | 2023 |
| Speiderveien 2 AS | Real estate | 2017 |
| Spektrum Matservering AS | Hospitality | 2010 |
| Spikerslaget AS | Construction | 2021 |
| Spikerslaget Holding AS | Construction | 2019 |
| Spillorama Bodø AS | Arts & recreation | 2004 |
| Sport Arctic AS | Wholesale & retail | 2018 |
| Sportshuset Bodø AS | Wholesale & retail | 2005 |
| Spørck Holding AS | Financial services | 2007 |
| SR Holding Og Invest AS | | 2026 |
| SR Service AS | Manufacturing | 2024 |
| Sribuathep AS | Hospitality | 2017 |
| ST Larsen Invest AS | Financial services | 2009 |
| Sta Logistics AS | | 2026 |
| Staalhaugen AS | | 2006 |
| Stabilis AS | | 2025 |
| Stadionparken Fellesanlegg Da | Agriculture & fishing | 1996 |
| Stadionparken Felleslokale AS | Households | 1991 |
| Stafilos AS | Real estate | 2005 |
| Stall Valle AS | Education | 2012 |
| Stand Up AS | Arts & recreation | 2019 |
| Stangnesterminalen 4 AS | Real estate | 2005 |
| Starsa AS | Administrative & support | 2019 |
| Start 9 AS | Administrative & support | 2016 |
| Startet 1 2026 AS | | 2026 |
| Staurbakk AS | Construction | 2017 |
| Stavnes Investment | | 2018 |
| Stavnes Servicetjenester Nuf | Administrative & support | 2018 |
| Stefan Holding AS | | 2024 |
| Stegforsteg AS | | 2018 |
| Stegunn Helseforetak AS | Health & social care | 2007 |
| Steig Eiendom AS | Real estate | 2021 |
| Steigtind AS | Professional & scientific | 2023 |
| Steigtind Holding AS | | 2026 |
| Stein Eiendom AS | Construction | 1990 |
| Steinar Andersen Elektriske AS | Construction | 2012 |
| Steinar Nilssen Rettspsykiatri AS | Health & social care | 2022 |
| Steinbra Musikk Og Formidling AS | Arts & recreation | 2018 |
| Steinesjøen AS | Real estate | 2024 |
| Steinsvatnet AS | Financial services | 2016 |
| Stella Invest AS | Financial services | 2005 |
| Stemmeprakt AS | Education | 2013 |
| Stenhaugmo Holding AS | Real estate | 2020 |
| Ster AS | Financial services | 2005 |
| Stereo Nord AS | Information & communication | 2016 |
| Stian Løkås Hagen AS | Wholesale & retail | 2006 |
| Stieli 434 Holding AS | | 2023 |
| Stig Frantzen AS | Real estate | 2012 |
| Stille Steine AS | Real estate | 2024 |
| Stina Holding AS | Financial services | 2005 |
| Sting Invest AS | Real estate | 2018 |
| Stock Invest AS | Financial services | 2011 |
| Store Studio AS | Arts & recreation | 2009 |
| Storeide Invest AS | Financial services | 2005 |
| Storgata 14 Bodø AS | Real estate | 2018 |
| Storgata 17 Bodø AS | Real estate | 1998 |
| Storgata 27/29 Bodø AS | Real estate | 2016 |
| Storgata 27/29 Sentrum AS | Real estate | 2019 |
| Storgata 28 AS | Wholesale & retail | 1997 |
| Storgata 31 AS | Real estate | 2008 |
| Storgata 32 Bodø AS | | 2025 |
| Storgata 34 Bodø AS | Real estate | 2020 |
| Storgata 49 AS | Real estate | 1994 |
| Storgata 56 Bodø AS | Real estate | 2006 |
| Storgata 78 AS | Real estate | 2018 |
| Storgata Utvikling AS | Real estate | 2019 |
| Storgaten 6 Bodø AS | Real estate | 2024 |
| STORGT.36 AS | Real estate | 2004 |
| Storheil AS | Health & social care | 2018 |
| Stormyra Invest AS | Wholesale & retail | 1981 |