| Ropo AS | Administrative & support | 2014 |
| Ropo Holding Norway AS | Real estate | 2020 |
| Ropo Messaging AS | Information & communication | 1993 |
| Rorge AS | Real estate | 2025 |
| Rosa Helikopter AS | Real estate | 2022 |
| Rose Gull AS | Other services | 2019 |
| Rosenberg AS | Professional & scientific | 2012 |
| Rosenlund Distribusjon Og Konsult Ans | Wholesale & retail | 1999 |
| Rosenvold Eiendom AS | Real estate | 1995 |
| Rosenvoldsgate 15 AS | Real estate | 2018 |
| Rosia Eiendomservice AS | Construction | 2014 |
| Rotisseriet AS | Hospitality | 2025 |
| Round Robin Productions AS | Arts & recreation | 2016 |
| Royal Satellitt System Ans | Information & communication | 2002 |
| RSR Eiendom AS | Real estate | 2005 |
| RT Montør AS | Construction | 2017 |
| RT Service AS | Construction | 2026 |
| Rubyelise AS | Wholesale & retail | 2017 |
| Runa Eiendom AS | Real estate | 1998 |
| Runar Rugtvedt Holding AS | Real estate | 2017 |
| Rundown.Fm AS | Information & communication | 2025 |
| Rush B AS | | 2022 |
| Rusk Invest AS | | 2005 |
| Russeservice AS | Wholesale & retail | 1992 |
| Rust Capital AS | | 2025 |
| RVH Holding AS | | 2021 |
| Rå Transport & Vedlikehold AS | Transport & logistics | 2020 |
| Rådhusgata 14 AS | Real estate | 2014 |
| Rådhusgata 6 Eiendom AS | Real estate | 2024 |
| Rådhusgata 6 Holding AS | | 2024 |
| Rådhusgata Utvikling AS | Real estate | 2020 |
| Rådhusgaten 15 AS | Real estate | 2005 |
| Rådhusgt. 9 AS | Real estate | 2006 |
| Råstadveien 186 AS | Real estate | 2026 |
| Rødne Bygg AS | Construction | 2023 |
| Rødslia Bolig AS | Real estate | 2021 |
| Rørholt Skogeiendom Da | Agriculture & fishing | 2000 |
| Rørleggerfirma Anders Furustad AS | Construction | 2014 |
| Rørleggerfirma Bjørn Jensen AS | Construction | 2025 |
| Rørleggerhjelpen AS | Construction | 2012 |
| Rørleggermester Ormestad AS | Construction | 2016 |
| Rørleggermester T. Almankås AS | Construction | 2020 |
| Røsjorde AS | Health & social care | 2010 |
| S 2 Sandefjord AS | Real estate | 2018 |
| S. Ugelstad AS | Real estate | 2006 |
| S. Ugelstad Invest AS | Real estate | 2006 |
| Safeshore AS | Real estate | 2012 |
| Saga Aluminium AS | Wholesale & retail | 2013 |
| Saga Grafisk AS | Professional & scientific | 2014 |
| Saga Holding Sandefjord AS | Real estate | 2017 |
| Saga Pluss AS | Professional & scientific | 2019 |
| Sah Invest Sandefjord AS | | 2018 |
| Sako Eiendom AS | Real estate | 2024 |
| Sakura Consulting AS | Real estate | 2015 |
| Salduba AS | Professional & scientific | 2005 |
| Salesclub AS | Information & communication | 2007 |
| Salgspartner Norge AS | Wholesale & retail | 2015 |
| Salong Creative AS | Other services | 2013 |
| Salong Unic AS | Other services | 2020 |
| Saltus AS | | 2012 |
| Sam Engineering AS | Professional & scientific | 2025 |
| Samdrift Olstad Hansen AS | Agriculture & fishing | 2013 |
| Sammy Sushi AS | Hospitality | 2021 |
| Samvirkelaget for Sundeskogen Vann- Og Avløp SA | Water & waste | 2017 |
| Sandar Blikk & Vedlikehold AS | Construction | 2020 |
| Sandar Boligutvikling AS | Real estate | 2020 |
| Sandar Bygg AS | Real estate | 2019 |
| Sandar Eiendom AS | Real estate | 2005 |
| Sandar Haandverksbryggeri AS | Manufacturing | 2013 |
| Sandar Regnskap SA | Professional & scientific | 1953 |
| Sandar Sider Fabrikk AS | Manufacturing | 2022 |
| Sandarveien 1 AS | Real estate | 2022 |
| Sandavegen 15 AS | Real estate | 2017 |
| Sandberg AS | Wholesale & retail | 2018 |
| Sandberg Holdings AS | Information & communication | 2008 |
| Sandbergfilm AS | Information & communication | 1993 |
| Sandefjord & Stokke Eiendomsmegling AS | Real estate | 2017 |
| Sandefjord Akademi AS | Education | 2021 |
| Sandefjord Apotek AS | Wholesale & retail | 2022 |
| Sandefjord Areal AS | Real estate | 2006 |
| Sandefjord Autodeal AS | Wholesale & retail | 2026 |
| Sandefjord Balkan AS | Hospitality | 2024 |
| Sandefjord Bil & Caravan AS | Wholesale & retail | 2025 |
| Sandefjord Billakkering AS | Other services | 2023 |
| Sandefjord Bilskade AS | Other services | 2024 |
| Sandefjord Bilutleie AS | Administrative & support | 2012 |
| Sandefjord Blåseisolering AS | Construction | 2023 |
| Sandefjord Boligutvikling AS | Real estate | 2015 |
| Sandefjord Bredbånd AS | Information & communication | 2019 |
| Sandefjord Byen Vår AS | Other services | 1998 |
| Sandefjord Bygg & Eiendom AS | Real estate | 2011 |
| Sandefjord Camping AS | Hospitality | 2016 |
| Sandefjord Capricorn Pizza AS | Hospitality | 2020 |
| Sandefjord Dyreklinikk AS | Professional & scientific | 2023 |
| Sandefjord Eiendom AS | Real estate | 1994 |
| Sandefjord Eiendomsutvikling AS | | 2008 |
| Sandefjord Elektro AS | Construction | 1996 |
| Sandefjord Energistasjon AS | Wholesale & retail | 2023 |
| Sandefjord Engineering AS | Professional & scientific | 1979 |
| Sandefjord Fiber AS | Information & communication | 2023 |