| Sapientor AS | Real estate | 2022 |
| Saraby-Schiager Invest AS | Education | 2022 |
| Schefte Mathisen AS | Administrative & support | 2022 |
| Schiager-De Sousa Golf AS | Wholesale & retail | 2015 |
| Seaton Holding AS | Hospitality | 2011 |
| Sedumnorge AS | Construction | 2026 |
| Sensit Solutions AS | Wholesale & retail | 2020 |
| Sensorteknikk AS | Professional & scientific | 1983 |
| Settem Monumentforretning Og Steinindustri AS | Manufacturing | 1987 |
| Sharedre AS | Professional & scientific | 2019 |
| Sideways AS | Wholesale & retail | 2005 |
| Silver Fly AS | | 2018 |
| Simmar AS | | 2024 |
| Sj-Capital AS | Professional & scientific | 2005 |
| Skansenveien 5 AS | Real estate | 2006 |
| Skar Bygg AS | Construction | 2026 |
| Skarphedin AS | | 2023 |
| Skarva Barnehage SA | Education | 1990 |
| Skarvin AS | | 2022 |
| Skarvin Invest AS | | 2025 |
| Skjærsveen Holding AS | | 2024 |
| Skollerud Anlegg AS | Construction | 2018 |
| Skollerud Gård Holding AS | Financial services | 2018 |
| Skollerud Holding AS | Construction | 2018 |
| Skollerud Maskin AS | Administrative & support | 2019 |
| Skomakerstua AS | | 2025 |
| Smigerskald AS | | 2022 |
| Smk-Invest AS | Real estate | 2021 |
| Smogeli & Mathisen Da | Agriculture & fishing | 2012 |
| Snow Valley Invest AS | Financial services | 2006 |
| Solsiden Bærum AS | Real estate | 2020 |
| Soppdilla AS | Education | 2023 |
| Spaceberries AS | Professional & scientific | 2026 |
| Spacefruit Invest AS | | 2024 |
| Spor Invest AS | | 2025 |
| Stall Champ AS | Real estate | 2007 |
| Stall Eide AS | Other services | 2019 |
| Stecon Engineering AS | Professional & scientific | 2004 |
| Steinfjell Consulting AS | Financial services | 2012 |
| Stenstrøm Og Motstrøm Kommunikasjon AS | Arts & recreation | 2016 |
| Stream AS | Transport & logistics | 2024 |
| Strendo Invest AS | | 2024 |
| Strikkenett AS | Wholesale & retail | 2012 |
| Studio Vibeke Skar AS | Professional & scientific | 2022 |
| Sun Energy Invest AS | | 2021 |
| Sandvika Blikkenslagerforretning AS | Construction | 1986 |
| Søgaard Consulting AS | Financial services | 2017 |
| Sørlie-Gruppen AS | Professional & scientific | 2024 |
| T Hareide Invest AS | | 2023 |
| T.Larsen Eiendomsservice AS | Administrative & support | 2022 |
| Teambyggerne AS | Professional & scientific | 2015 |
| Tee to Green Ans | Wholesale & retail | 2001 |
| Tekinvestor AS | | 2023 |
| Teleto AS | Construction | 2024 |
| Tells Holding AS | Financial services | 2018 |
| Tenzing Holding AS | | 2024 |
| Terje Kampen AS | Construction | 1997 |
| Tgu 188 Holding AS | | 2023 |
| Thamar AS | | 2023 |
| Thano AS | Wholesale & retail | 2016 |
| The Guest Mindset AS | Professional & scientific | 2026 |
| Thelmar AS | Financial services | 2017 |
| Thelmar Invest AS | | 2020 |
| Thomas Møbeltransport AS | Transport & logistics | 2017 |
| Thorud Management AS | Health & social care | 2004 |
| Thygesen Invest AS | | 2018 |
| Thygesen Invest Eiendom AS | | 2024 |
| TK Golfreiser AS | Hospitality | 1989 |
| Tommelopp AS | | 2024 |
| Tranmg Invest AS | | 2026 |
| Trefellerservice AS | Agriculture & fishing | 2015 |
| Trumar AS | | 2024 |
| Tulu Management AS | Administrative & support | 2019 |
| Tyr Utvikling AS | Real estate | 2020 |
| Tømrermester Knut Bye AS | Construction | 2013 |
| Tømrermester Vidar Stenberg AS | Construction | 2013 |
| Unattend AS | Information & communication | 2026 |
| Uppal Holding AS | Real estate | 2015 |
| Uppal Invest AS | Real estate | 2015 |
| Upscore AS | Administrative & support | 2021 |
| Varre's AS | Wholesale & retail | 2005 |
| Vensåsseter SA | Real estate | 2022 |
| Vestre Aker Eiendom AS | Real estate | 1997 |
| Vestre Naverfjorden Vann- Og Avløp AS | Water & waste | 2016 |
| Vigman Invest AS | | 2022 |
| Villa Enga AS | Real estate | 2020 |
| Villa Solsiden AS | Real estate | 2020 |
| Vinjar Invest AS | Financial services | 2020 |
| Vma Holding AS | | 2012 |
| Vognwash AS | Professional & scientific | 2020 |
| Vonhelset Holding AS | Financial services | 2017 |
| Wholesome AS | Wholesale & retail | 2022 |
| Øpstad Elektro AS | Construction | 2013 |
| Ørke Eiendom AS | Real estate | 2006 |
| Øy Stories Da | Wholesale & retail | 2018 |