| SLK Invest AS | | 2026 |
| Smuler & Smaragder AS | | 2026 |
| Snekkeviken Utvikling AS | Real estate | 2017 |
| Snusbutikk.No AS | Wholesale & retail | 2023 |
| Solbakken 3-5 Utvikling AS | Real estate | 2018 |
| Solis Invest AS | | 2026 |
| Soulspace AS | Professional & scientific | 2023 |
| Spara Holding AS | | 2019 |
| Spektercom AS | Professional & scientific | 2026 |
| Spor Og Spire Ans | Agriculture & fishing | 2025 |
| Stagrum Arkitektur AS | Professional & scientific | 2020 |
| Stasjonen Invest AS | Real estate | 2009 |
| Steens Eiendom AS | Real estate | 2008 |
| Stein Fyksen AS | Professional & scientific | 2012 |
| Stesta AS | Professional & scientific | 2000 |
| Stett Holding AS | Wholesale & retail | 2014 |
| Stjørn-D AS | Administrative & support | 2020 |
| Stolt Media AS | Professional & scientific | 2025 |
| STR Nordic AS | Wholesale & retail | 2019 |
| Straj Holding AS | | 2026 |
| Strand Instrumentservice AS | Professional & scientific | 2026 |
| Strindin Ikt AS | Information & communication | 2012 |
| Struct AS | Information & communication | 2012 |
| Sublime Performance AS | Professional & scientific | 2018 |
| Sunfair AS | Information & communication | 2026 |
| Sunn Holdning AS | | 2025 |
| Synnevåg Gruppen AS | Professional & scientific | 2018 |
| Sømløs Consulting AS | Information & communication | 2019 |
| Søndre Bråte Invest AS | Transport & logistics | 2005 |
| Søndre Eldor Småbruk Da | Agriculture & fishing | 2023 |
| Sørbråtan Eiendom AS | Real estate | 2019 |
| Søråsteigen Garasjelag SA | Transport & logistics | 1959 |
| T.Nordskaug AS | Real estate | 2013 |
| Takst & Bygningskontroll AS | Real estate | 2012 |
| Tannlege Gjertrud E. Fostad AS | Health & social care | 2020 |
| Team Toftelien Ans | Wholesale & retail | 1999 |
| Telamon Holding AS | Information & communication | 2019 |
| Temabud Marek Liskiwicz | Construction | 2005 |
| Tempus Financial Engineering AS | Information & communication | 1996 |
| Terp & Co Norway AS | Professional & scientific | 2013 |
| TGN AS | Professional & scientific | 2016 |
| Thinkery AS | Professional & scientific | 2019 |
| Thirud Gruppen AS | Information & communication | 2005 |
| Tilito AS | Wholesale & retail | 2018 |
| Tim Kristian AS | Professional & scientific | 2024 |
| TJV Invest AS | Financial services | 2018 |
| TLW Holding AS | | 2024 |
| Tobiem Holding AS | Real estate | 2026 |
| Todo O Nada AS | Financial services | 2016 |
| Tommy Skagseth AS | Construction | 2018 |
| Torgersen Og Norderval AS | Real estate | 2011 |
| Tosea AS | Education | 2012 |
| Transporttjenester AS | Transport & logistics | 1997 |
| Trefellingsspesialisten AS | Agriculture & fishing | 2017 |
| Treider Utleie AS | Real estate | 2005 |
| Triaba AS | Professional & scientific | 2023 |
| Tryggfrakt AS | Transport & logistics | 2025 |
| Tull & Tools Invest AS | Administrative & support | 2013 |
| Tutt AS | Information & communication | 2019 |
| Tømrer Thomas Eidsvold AS | Construction | 2019 |
| Tømrerfirmaet Marius Johansen AS | Construction | 2025 |
| Tømrermester Per Småriset AS | Construction | 2015 |
| Uavhengig Kontroll Oslo Akershus AS | Professional & scientific | 2012 |
| Under Pelsen AS | Professional & scientific | 2016 |
| Uniflow Norge AS | Information & communication | 2020 |
| Unilite Norge AS | Wholesale & retail | 2019 |
| Urbanlaw AS | Professional & scientific | 2026 |
| Ux Themes AS | Information & communication | 2015 |
| V & a Holding AS | Construction | 2020 |
| Valgermo Holding AS | | 2022 |
| Valstadtjernet Grøftelag SA | Real estate | 1964 |
| Vanit AS | Health & social care | 2005 |
| Varebilsalg.No AS | Wholesale & retail | 2019 |
| Vaskepott AS | Administrative & support | 2008 |
| Vassumkrysset AS | Real estate | 2012 |
| Vegard Fiane Holding AS | | 2026 |
| Vegtech Norge AS | Agriculture & fishing | 2012 |
| Ventavio AS | | 2026 |
| Vest Invest AS | Professional & scientific | 1997 |
| Veterinærene Bendiksen&Smith AS | Professional & scientific | 2014 |
| Vhle AS | Real estate | 2017 |
| Viken Bil Senteret AS | Wholesale & retail | 2024 |
| Viken Inskripsjon AS | Manufacturing | 2026 |
| Viken Prosjekt & Eiendom AS | Construction | 2019 |
| Viken Transport Og Logistikk AS | Transport & logistics | 2025 |
| Viken Vilt & Delikatesse AS | Wholesale & retail | 2020 |
| Vinje Viken AS | Real estate | 2021 |
| Visitosloregion SA | Administrative & support | 2015 |
| Vistory Norge AS | Professional & scientific | 2023 |
| Vitruvius Holding AS | Professional & scientific | 2016 |
| Webgroup.No Nuf | Information & communication | 2006 |
| Wells Trading Norway Nuf | Professional & scientific | 2012 |
| Wernig Prosjektering AS | Professional & scientific | 2026 |
| Wetlesen Anlegg AS | Construction | 1999 |
| Wetlesen Eiendom AS | Real estate | 2023 |
| Wild Fire Foods AS | Manufacturing | 2016 |
| Winterleap AS | Professional & scientific | 2024 |
| Wold Eiendom AS | Real estate | 2001 |
| Yurk AS | | 2025 |
| Zbigniew Nalepa Repairs - Building Services Nuf | Construction | 2021 |