| Rapido Group Scandinavia Nuf | Wholesale & retail | 2007 |
| Rava AS | Professional & scientific | 2025 |
| Ravn Hundehotell AS | Agriculture & fishing | 2025 |
| RB Transport AS | Transport & logistics | 2013 |
| Rca AS | Real estate | 2005 |
| Realum AS | Real estate | 1995 |
| Relator AS | Professional & scientific | 2001 |
| Relocate AS | Professional & scientific | 2020 |
| Renatas Bygg AS | Construction | 2021 |
| Replica AS | | 2022 |
| Restaurant Venezia AS | Hospitality | 2018 |
| Resurface AS | Education | 2025 |
| Revma-Ortopedi AS | Health & social care | 2016 |
| Rex Drift & Service AS | Construction | 2026 |
| RF Regnskap AS | Professional & scientific | 2025 |
| RF Vekst AS | Administrative & support | 2020 |
| Rinde Holding AS | Wholesale & retail | 2017 |
| Rj-Rams Consulting AS | Professional & scientific | 2014 |
| RLB Nordic Invest AS | | 2026 |
| Rofred AS | Professional & scientific | 2012 |
| Rog Holding AS | Real estate | 2020 |
| Rohde Hjelmtvedt Restauranter AS | Hospitality | 2009 |
| Rosanes AS | Professional & scientific | 2006 |
| Rosanes Gass AS | Mining & quarrying | 2017 |
| Rosanes Holding AS | Financial services | 2017 |
| Rosanes Invest AS | Real estate | 2005 |
| Rotana Tours AS | Administrative & support | 2024 |
| Runde Consult AS | Information & communication | 2010 |
| Rune W. Johansen Bygningsfirma AS | Construction | 2004 |
| Rune's Hundeforservice AS | Wholesale & retail | 2012 |
| Ryen & Stensland AS | Wholesale & retail | 2021 |
| Rå Grønn Salong Da | Wholesale & retail | 2022 |
| Rå Hellberg Hagen AS | Other services | 2023 |
| Rå Shop AS | Wholesale & retail | 2022 |
| Råstad Foods AS | Manufacturing | 2016 |
| Rørleggergutta AS | Construction | 2008 |
| Røsholdt Holding AS | Professional & scientific | 2011 |
| S Edvardsen Invest AS | | 2021 |
| S&T-Invest AS | | 2023 |
| Saasen Holding AS | | 2025 |
| Safe Auto AS | Wholesale & retail | 2024 |
| Safe Opplæring AS | Education | 2015 |
| Saga Golfkafé AS | Hospitality | 2026 |
| Sama Eiendom AS | Real estate | 2010 |
| Samspill Kompetanse AS | Education | 2023 |
| Samspille.No AS | Education | 2022 |
| San Miguel Invest AS | | 2024 |
| Sanda Planteskole AS | Agriculture & fishing | 1976 |
| Sandodden Invest AS | | 2023 |
| Sandy Miles AS | | 2021 |
| Sanivo AS | Professional & scientific | 2026 |
| Santa Barbara AS | Real estate | 2005 |
| Sawjig AS | Professional & scientific | 2022 |
| Scandic Tools AS | Wholesale & retail | 2019 |
| Schütt Forever AS | Professional & scientific | 2019 |
| SE Andersen Holding AS | Financial services | 2005 |
| Seapro AS | Administrative & support | 1998 |
| Seileråsen AS | Real estate | 2004 |
| Selma Oline AS | Wholesale & retail | 2007 |
| Sem Hageby AS | Real estate | 2016 |
| Semsbyveien 94 AS | Real estate | 2021 |
| Semsveien Bygg AS | Real estate | 2009 |
| Seniorconsult AS | Professional & scientific | 2016 |
| Sensorify AS | Information & communication | 2020 |
| Serengeti AS | Professional & scientific | 2005 |
| Seven Summits Invest AS | | 2012 |
| SFP AS | Hospitality | 2023 |
| SG Group AS | Information & communication | 2020 |
| Sidsel Kløw AS | Professional & scientific | 2022 |
| Silverscreen AS | Information & communication | 2015 |
| Sirocco AS | Wholesale & retail | 1996 |
| Sissels Hudpleie AS | Other services | 2012 |
| Sjond AS | | 2021 |
| Sjåvik Holding AS | | 2018 |
| Sjøvik Invest AS | | 2015 |
| SK Data AS | Information & communication | 1986 |
| Skagerak Eiendomsforvaltning AS | Professional & scientific | 2013 |
| Skagerak Vekst AS | Information & communication | 1991 |
| Skaret AS | | 2021 |
| Skarphagaveien 48A AS | Real estate | 2020 |
| Skart Holding AS | Real estate | 2020 |
| Skaugr AS | Real estate | 2026 |
| Skaugr Holding AS | Real estate | 2026 |
| Skinberry AS | Wholesale & retail | 2025 |
| Skiold AS | Real estate | 2018 |
| SKJÆRGÅRDEN24 Båtverksted AS | Manufacturing | 2008 |
| Skog Og Anleggsservice AS | Agriculture & fishing | 2022 |
| Skomsøy Trafikkskole AS | Education | 2013 |
| Skrimveien SA | Real estate | 1958 |
| Skynet Accounting AS | Professional & scientific | 2020 |
| Slagenveien 5- 13 AS | Real estate | 2007 |
| Smidiger AS | Information & communication | 2026 |
| Smidsrød Fus Barnehage AS | Education | 2018 |
| Smidsrødveien 14 AS | Real estate | 2014 |
| Smidsrødveien 43 AS | Administrative & support | 1995 |
| Smidsrødveien 5 AS | Real estate | 2008 |
| Smidsrødveien Handel AS | Real estate | 2018 |
| SMP Klinikken AS | Other services | 2023 |
| Små Hjerter AS | Wholesale & retail | 2025 |
| Småvik Vann Og Avløp SA | Water & waste | 2018 |