| Punahilkka AS | Financial services | 2012 |
| Paletten Jern og Farve A/S | Wholesale & retail | 1988 |
| Qualinor AS | Professional & scientific | 2025 |
| R.Eiendom AS | Real estate | 2014 |
| Raet Holding AS | | 2020 |
| Ramico AS | Administrative & support | 2005 |
| Ramocean AS | Professional & scientific | 2020 |
| Reason Y AS | Information & communication | 2024 |
| Rednas Consult AS | Professional & scientific | 2024 |
| Rednas Holding AS | Professional & scientific | 2014 |
| Rednas People AS | Professional & scientific | 2025 |
| Ressurser Sikkerhet Investering Da | Real estate | 1997 |
| Ribwave AS | Administrative & support | 2024 |
| Ringane Holding AS | Real estate | 1989 |
| Robella AS | Administrative & support | 2024 |
| Rosin Invest AS | Real estate | 2007 |
| Rådhuset Trattoria AS | Hospitality | 2020 |
| Råknes Invest AS | Real estate | 2006 |
| Rønning Invest Holding AS | | 2021 |
| Rørås Gård AS | Real estate | 2022 |
| Rørås Gårdsbarnehage AS | Education | 2022 |
| S Granli Invest AS | | 2026 |
| Sannervi AS | Information & communication | 2024 |
| Saurabh Invest AS | | 2019 |
| Scanmar AS | Manufacturing | 1980 |
| Scansense AS | Manufacturing | 2003 |
| Scansense Pressure AS | Professional & scientific | 2026 |
| Scantech AS | Manufacturing | 1989 |
| Scaramanga Capital | | 1988 |
| Seainvest AS | Financial services | 2007 |
| Selværnesset AS | | 2025 |
| Setså Holding AS | Real estate | 2018 |
| SG24 Marine AS | Wholesale & retail | 2023 |
| Skandinaviska Swedenborgssällskapet | Professional & scientific | 2011 |
| Skapital AS | Professional & scientific | 1997 |
| Skilld AS | Information & communication | 2021 |
| Skjærgaarden Gartneri AS | Agriculture & fishing | 2020 |
| Skjærgaarden Holding AS | Agriculture & fishing | 2016 |
| Slagen Teknikk AS | Construction | 2021 |
| Slagen Varmepumpeservice AS | Construction | 2017 |
| Snegovik AS | Professional & scientific | 2005 |
| Solcellekompaniet AS | Construction | 2022 |
| Soxy AS | Wholesale & retail | 2024 |
| Sprett Engineering AS | Professional & scientific | 2016 |
| Spurv-On AS | Financial services | 2016 |
| Stance Invest AS | Real estate | 2020 |
| Stang Gård AS | Agriculture & fishing | 2022 |
| Stang Maskin AS | Agriculture & fishing | 1986 |
| Stangs Gate 5 AS | Real estate | 2005 |
| Steingjerdet Barnehage AS | Education | 2013 |
| Steingjerdet Holding AS | Education | 2026 |
| Størupgård Antik Rita Sode | Wholesale & retail | 1998 |
| Svavik Holding AS | Wholesale & retail | 2011 |
| Sørdal Eiendom AS | Construction | 2018 |
| Sørensen Og Hogsnes AS | Construction | 2014 |
| Sørensen Og Hogsnes Invest AS | Real estate | 1989 |
| T Sørensen Holding AS | Financial services | 2022 |
| Tandersen Holding AS | Professional & scientific | 2007 |
| Tannhjulsautomaten G a Næss AS | Real estate | 1961 |
| Tannlege Boyan Liptchev AS | Health & social care | 2015 |
| Teien Vann Og Avløp SA | Water & waste | 2023 |
| Tinnes-Mork Maskin AS | Construction | 2025 |
| Tkftp AS | | 2026 |
| Torvet Legekontor AS | Health & social care | 2013 |
| TR Rideskole AS | Education | 2025 |
| Treningslegen AS | Arts & recreation | 2020 |
| Trimet Holding AS | Financial services | 2005 |
| Trolden Holding AS | Information & communication | 2021 |
| Trond Sand Holding AS | | 2024 |
| Tømrer Johan Brataas AS | Construction | 2020 |
| Ulvensøen Teknikk AS | Professional & scientific | 2016 |
| Unni Auensen Holding AS | | 2024 |
| Vedmont AS | Administrative & support | 2016 |
| Viken AS | Construction | 1990 |
| Villafett & Sønner AS | Professional & scientific | 2005 |
| Vimama AS | Real estate | 2022 |
| Vital Kompetanse AS | Education | 2021 |
| Vått Og Tørt AS | Education | 2016 |
| Waterside Capital AS | Information & communication | 2005 |
| We Holding AS | Real estate | 2005 |
| Welltech AS | Construction | 2018 |
| Wexahl Eiendom AS | Real estate | 1981 |
| Zandra Mote AS | Wholesale & retail | 2014 |
| Zargon Holding AS | Real estate | 2018 |
| Åsgård Consulting AS | Professional & scientific | 2012 |
| Åsgården Frisør AS | Other services | 2018 |
| Åsgårdstrand Autoservice AS | Wholesale & retail | 2010 |
| Åsgårdstrand Helsesenter AS | Professional & scientific | 2024 |
| Åsgårdstrand Hotell Eiendom AS | Real estate | 2021 |
| Åsgårdstrand Regnskap AS | Professional & scientific | 2014 |
| Åsgårdstrand Strandkiosk Ans | Wholesale & retail | 1995 |
| Økonomikontroll BW AS | Professional & scientific | 1983 |
| Østlandet Brønn Og Energiboring AS | Construction | 2003 |