| Pets Bamble Zoo AS | Wholesale & retail | 2020 |
| Pil & Stangodden SA | Water & waste | 2011 |
| Pims Holding AS | | 2024 |
| Pizza På Hjul Da | Transport & logistics | 1988 |
| Praca Holding AS | Real estate | 2014 |
| Prisme Bygg AS | Construction | 1972 |
| Prora-Lab AS | Professional & scientific | 2015 |
| Prosessdrift AS | Manufacturing | 2026 |
| Protesemakeriet AS | Manufacturing | 2020 |
| R.B.S. Eiendom AS | Real estate | 1993 |
| R.K. Kystservice Da | Construction | 2005 |
| Raev AS | Professional & scientific | 2019 |
| Rafinique AS | Wholesale & retail | 1987 |
| Rafinique Klær AS | Wholesale & retail | 2026 |
| Rafnes Skog AS | Agriculture & fishing | 2022 |
| Ragge Invest AS | Real estate | 2019 |
| Ragnar Eiendom AS | Real estate | 2014 |
| Raskenlund AS | Information & communication | 2013 |
| Rebecca Hansen Frisør AS | Other services | 2024 |
| Reconsult AS | Financial services | 2012 |
| Renhold Service Grenland AS | Administrative & support | 2016 |
| Rentalhouse AS | Real estate | 2018 |
| Rep & Utleieservise AS | Real estate | 2020 |
| Ressursteam AS | Administrative & support | 2019 |
| Rett-Ferdig AS | Information & communication | 2025 |
| Riis AS | Professional & scientific | 2006 |
| Robert Andre Dalene Holding AS | | 2017 |
| Rogn Belysning Og Interiør AS | Wholesale & retail | 2008 |
| Rolf Thommessen Eftf AS | Manufacturing | 2023 |
| RS Solutions AS | Manufacturing | 2013 |
| RTJ Svaber Da | Manufacturing | 2017 |
| Ruber Eiendom AS | Real estate | 2015 |
| Rudskjær AS | | 2025 |
| Rugtvedt Dagligvare AS | Wholesale & retail | 2009 |
| Rugtvedt Eiendom AS | Real estate | 2017 |
| Rugtvedt Holding AS | Real estate | 2008 |
| Rugtvedt Lagerbygg AS | Real estate | 2025 |
| Rugtvedt Lagerseksjon AS | Real estate | 2025 |
| Ryste-Consulting AS | Professional & scientific | 2012 |
| Rønholt Holding AS | | 2019 |
| Rønholt Legekontor AS | Health & social care | 2005 |
| Rønholtveien 166 SA | Real estate | 2002 |
| Røra Charter Nuf | Transport & logistics | 2016 |
| Rørholt Søndre Ans | Agriculture & fishing | 2015 |
| Rørinvest AS | Real estate | 2024 |
| S5 Norway AS | Transport & logistics | 2016 |
| Safe-Escape System AS | Wholesale & retail | 2020 |
| Safecon AS | Real estate | 1995 |
| Sagmyra Apotek AS | Wholesale & retail | 2026 |
| Salong Harmoni AS | Other services | 2008 |
| Sandvika Vest AS | Real estate | 2021 |
| Sannidal Mat AS | Wholesale & retail | 2006 |
| Saras Hudpleie AS | Other services | 2025 |
| SB Nordic AS | Real estate | 2021 |
| Scalar AS | Professional & scientific | 2025 |
| Sciigo AS | Information & communication | 2022 |
| Seabased Norway AS | Professional & scientific | 2017 |
| Segatech AS | Wholesale & retail | 2015 |
| Seilbåtsenteret AS | Manufacturing | 2023 |
| Sekkekilen Drift AS | Administrative & support | 2006 |
| Selm Holding AS | Financial services | 2012 |
| Setrevegen 30 AS | Real estate | 2014 |
| SG Handel AS | Wholesale & retail | 2010 |
| SG Vekst AS | Wholesale & retail | 2013 |
| Sg-Tek Eiendom AS | Wholesale & retail | 2017 |
| Siglar Development AS | Professional & scientific | 2013 |
| Signal Companiet AS | Manufacturing | 2019 |
| Signalveien 8 AS | Real estate | 2011 |
| Sikre Holding AS | | 2020 |
| Sildeberget Båt & Motor AS | Manufacturing | 2023 |
| Singularity Engineering AS | Professional & scientific | 2015 |
| Siv Ing Alf Dalen AS | Professional & scientific | 1994 |
| Siv Ing Eldrup AS | Professional & scientific | 2002 |
| Skagerak IT AS | Wholesale & retail | 2017 |
| Skagerrak Profilering AS | Wholesale & retail | 2025 |
| Skamløs Da | Arts & recreation | 2025 |
| Skaubo Invest AS | | 2022 |
| Skjerke Brygge AS | Arts & recreation | 2006 |
| Skjerkøya Bygg AS | Real estate | 2018 |
| Skjerkøya Havneterminal AS | Transport & logistics | 2018 |
| Skomaker Ismael AS | Other services | 2021 |
| Sktre AS | Agriculture & fishing | 2026 |
| Skyfritt AS | Information & communication | 2019 |
| Skyland Brotorvet AS | Arts & recreation | 2021 |
| Skånvik Tech AS | Information & communication | 2026 |
| Slottsfjell Invest AS | Professional & scientific | 2017 |
| Smedplassen Gård Da | Agriculture & fishing | 2004 |
| SMK Bygg AS | Construction | 2014 |
| Små & Store Stunder AS | Wholesale & retail | 2025 |
| Solstua Kulturbarnehage AS | Education | 2002 |
| Sophus Da | Hospitality | 2003 |
| Sophy Gjerstad AS | Hospitality | 2018 |
| Sot Eiendom 1 AS | Real estate | 2019 |
| Sowimarik AS | Professional & scientific | 2012 |
| Spiro Service AS | Wholesale & retail | 2013 |
| SR Scandinavian Recycling AB | Professional & scientific | 1998 |
| Stall Findal AS | Arts & recreation | 2001 |
| Star Wash Stathelle AS | Other services | 2015 |
| Stathelle Apotek AS | Wholesale & retail | 2022 |
| Stathelle Auto 1 AS | Other services | 2025 |