| Stormyra Karosseri Eiendom AS | Real estate | 2012 |
| Stormyrveien 37 AS | Wholesale & retail | 1978 |
| Stormyrveien 50, 52 Og 54 AS | Real estate | 2024 |
| Stormyrveien AS | Real estate | 2006 |
| Storslettrylend Ved Ans | Manufacturing | 2026 |
| Storvik Salong AS | Other services | 1998 |
| Strand Resorts AS | Real estate | 2007 |
| Stranda Invest AS | Real estate | 2008 |
| Stranden Retail AS | Wholesale & retail | 2021 |
| Strandgata 48 AS | Real estate | 2025 |
| Strandnes Holding AS | Administrative & support | 2017 |
| Stratacon AS | Professional & scientific | 2013 |
| Strauman AS | Information & communication | 2019 |
| Straumar AS | Real estate | 2000 |
| Straumtest AS | Health & social care | 2023 |
| Studenthjørnet AS | Real estate | 2023 |
| Studentongan Barnehage AS | Education | 2022 |
| Sture Mekaniske AS | Manufacturing | 2020 |
| Styrka AS | Professional & scientific | 2023 |
| Støre Invest AS | Wholesale & retail | 2005 |
| Størmer AS | Real estate | 2005 |
| Støttfjord Holding AS | Agriculture & fishing | 2010 |
| Sub Bodø AS | Hospitality | 2006 |
| Sulitjelma Eiendomsutvikling AS | Real estate | 2018 |
| Sulitjelma Lodge AS | Real estate | 2022 |
| Sulland Bodø AS | Other services | 1990 |
| Summer Invest AS | | 2022 |
| Sunne Spillemann Rubach | Arts & recreation | 2013 |
| Susanne Hud & Velvære AS | Other services | 2022 |
| Sushi Point Bodø AS | Hospitality | 2016 |
| Sustineo AS | Professional & scientific | 2023 |
| Svartis AS | | 2024 |
| Svartisen Holding AS | Energy | 2003 |
| Svartisen Sarpsfoss Holding AS | | 2025 |
| Svartoksen Fiskeri AS | Agriculture & fishing | 2021 |
| Svein Torrissen & Sønner AS | Real estate | 1990 |
| Sveins Auto AS | Other services | 1997 |
| Svendsen Kjøleservice AS | Construction | 2025 |
| Svenns Transport AS | Transport & logistics | 2002 |
| Sverdrup Regnskap AS | Professional & scientific | 2024 |
| Sverre Kristensen Transport AS | Transport & logistics | 2005 |
| Svinn & Vinn AS | Real estate | 2017 |
| Svømmehallen AS | Real estate | 2012 |
| Svømmehallen Scene AS | Arts & recreation | 2021 |
| Swiss Norwegian Holding AS | Real estate | 2023 |
| Swiss Norwegian Housing 1 AS | Real estate | 2023 |
| Synapsene AS | Professional & scientific | 2020 |
| Synergihuset AS | Professional & scientific | 2022 |
| Synlig AS | Wholesale & retail | 2011 |
| Systm AS | Professional & scientific | 2021 |
| Syvende Himmel AS | Other services | 1995 |
| Sæterbø Holding AS | | 2025 |
| Søkertorget AS | Professional & scientific | 2009 |
| Sørfugløy Grunneierlag SA | Real estate | 2024 |
| Sørhavn AS | Arts & recreation | 2018 |
| Sørpånordpå AS | Hospitality | 2023 |
| Sørværskaia AS | Transport & logistics | 2013 |
| Søstrenes Eiendom AS | Real estate | 2024 |
| T Amundsen Eiendom AS | Real estate | 2018 |
| T Kolstad Eiendom AS | Real estate | 1994 |
| T-O Falch AS | Real estate | 2026 |
| T-Rr Eiendom AS | Real estate | 2016 |
| T-Solutions AS | Construction | 2023 |
| T. a. Svendsen Invest AS | Financial services | 2005 |
| T. E. Eiendom AS | Real estate | 2025 |
| T. E. Holding AS | Real estate | 2021 |
| T. Sæthre AS | Real estate | 2012 |
| T. Tørdal Invest AS | Real estate | 2005 |
| T.S Hansen AS | | 2024 |
| T/S-Holding AS | | 2026 |
| T46 Invest AS | Real estate | 2013 |
| Tak & Vedlikehold Ans | Construction | 1994 |
| Taket Eiendom AS | Real estate | 2024 |
| Takst Nord AS | Real estate | 2018 |
| Takst Og Byggerådgivning AS | Professional & scientific | 2013 |
| Takst-Team Bodø AS | Professional & scientific | 1996 |
| Takstforum Holding AS | Professional & scientific | 2005 |
| Takstforum Nord AS | Professional & scientific | 1998 |
| Taksthuset-Bodø AS | Real estate | 2006 |
| Takstmann Holst AS | Real estate | 2021 |
| Takstmann Ørjan Li AS | Real estate | 2016 |
| Taksystem AS | Construction | 2022 |
| Tampan Holding AS | | 2021 |
| Tandberg Center AS | Arts & recreation | 2021 |
| Tandberggården AS | Real estate | 2007 |
| Tannlege Anna Hoem AS | Health & social care | 2017 |
| Tannlege Evensen AS | Health & social care | 2025 |
| Tannlege Lise Danielsen AS | Health & social care | 2020 |
| Tannlege Sigmund Olaf Kristiansen Kjeveortopedi AS | Health & social care | 2000 |
| Tannlege Therese Bakke AS | Health & social care | 2007 |
| Tannlege Tor Tegnander AS | Health & social care | 1998 |
| Tannlege Øyvind Juliussen AS | Health & social care | 2017 |
| Tannlegegården Barth AS | Health & social care | 2012 |
| Tanya Osnes AS | Other services | 2024 |
| Targa Norge AS | Wholesale & retail | 2011 |
| Task AS | Real estate | 2000 |
| TB Bodø AS | Wholesale & retail | 2014 |
| Tb-J Eiendom AS | Real estate | 2018 |
| Tb-J Fauske AS | Hospitality | 2019 |
| Tb-J Invest AS | Real estate | 2006 |