| Suksee AS | Wholesale & retail | 2008 |
| Sunva AS | Construction | 2021 |
| Sunva Holding AS | Real estate | 2021 |
| Sunx Green Solutions | Construction | 2014 |
| Sunyard AS | | 2020 |
| Sup & Stup AS | Arts & recreation | 2015 |
| Supertak AS | Construction | 2022 |
| Svebrog AS | | 2005 |
| Svein Egils Bilverksted AS | Other services | 2010 |
| Sveip AS | Information & communication | 2013 |
| Svemer AS | Wholesale & retail | 2017 |
| Svennevig Vann AS | Water & waste | 2015 |
| Svåbekk 17 AS | Real estate | 1994 |
| Sypressgata AS | Real estate | 1991 |
| Sør Caravan AS | Wholesale & retail | 2019 |
| Sør Honning AS | Agriculture & fishing | 2020 |
| Sør Transport AS | Transport & logistics | 2002 |
| Sørlaminering Eiendom AS | Real estate | 2023 |
| Sørvindu AS | Wholesale & retail | 2010 |
| T & H Holding AS | Professional & scientific | 2020 |
| T O Tøpfer Holding AS | | 2025 |
| T S O Eiendom AS | Real estate | 2006 |
| T. Corneliussen Transport AS | Transport & logistics | 2018 |
| T. Kirkhus Transport AS | Transport & logistics | 2015 |
| Ta Myrland AS | | 2026 |
| Tagholdt AS | Financial services | 2012 |
| Tah-Eiendom AS | Real estate | 2007 |
| Tah-Holding AS | Real estate | 2007 |
| Tah-Shipping AS | Administrative & support | 2011 |
| TAKST1 AS | Real estate | 2023 |
| Takstmann Kjell Erik Olsen AS | Real estate | 2017 |
| Taktekking Sør Isola AS | Construction | 2014 |
| Tannalven AS | Health & social care | 2020 |
| Tannlege Grete Ravndal Tveit AS | Health & social care | 2019 |
| Target Sensor Technology AS | Information & communication | 2018 |
| Team Rølvåg AS | Information & communication | 2019 |
| Team Vold Gunvaldsen AS | Education | 2023 |
| Tecsol AS | Professional & scientific | 2025 |
| Teine Compagniet AS | Agriculture & fishing | 2016 |
| Teknofiber AS | Professional & scientific | 2023 |
| Tenny Ans | | 1989 |
| Teppehuset AS | Wholesale & retail | 2000 |
| Terrengbil AS | Wholesale & retail | 2022 |
| Thaloran Holding AS | | 2019 |
| The Rework AS | Professional & scientific | 2024 |
| The Wave AS | Professional & scientific | 2014 |
| Thera Invest AS | Real estate | 2017 |
| Theratrade AS | Wholesale & retail | 2012 |
| Thiki Green-Bay AS | Professional & scientific | 2008 |
| Thomassen Rør AS | Construction | 2017 |
| Tingsaker Camping AS | Hospitality | 2004 |
| Tingsaker Torv 1 AS | Real estate | 2021 |
| Tingsaker Trafikksenter AS | Wholesale & retail | 2005 |
| Tingsakeråsen AS | Real estate | 2022 |
| Tingtun AS | Professional & scientific | 1996 |
| TJ Endresen Invest AS | | 2026 |
| Tobler Graphics AS | Professional & scientific | 2026 |
| Toffen Music Solution AS | Professional & scientific | 2005 |
| Topstad Og Spieler Holding AS | Arts & recreation | 2001 |
| Tord Holding AS | | 2020 |
| Torstein Kinn AS | Arts & recreation | 2013 |
| Toscana Restaurante Ans | Hospitality | 2003 |
| Trabbic AS | Manufacturing | 2015 |
| Trafikkopplæring Sør AS | Transport & logistics | 2016 |
| Tribute AS | Administrative & support | 2000 |
| Trimtex Norge AS | Wholesale & retail | 2015 |
| Trimtex Sport AS | Wholesale & retail | 2015 |
| Trond K Larsen AS | Construction | 2020 |
| Trond Print Design AS | Professional & scientific | 2015 |
| TRS Norway AS | Wholesale & retail | 2026 |
| Truehit Solutions AS | Information & communication | 2025 |
| Tryit AS | Information & communication | 2012 |
| Tungis Holding AS | Hospitality | 2021 |
| Tyra AS | Administrative & support | 2019 |
| Tyri Applikasjoner AS | Information & communication | 2026 |
| Tønnessen VVS AS | Construction | 2026 |
| U.R. Design AS | Other services | 2022 |
| Ub Fysioterapi Da | Health & social care | 2019 |
| Ulf Reidar Tønnessen AS | Construction | 2020 |
| Utleieboksen AS | Information & communication | 2020 |
| V. H. Eiendom & Service AS | Real estate | 1994 |
| Vallesverd Holding AS | Arts & recreation | 2014 |
| Vallesverd Marina AS | Arts & recreation | 2014 |
| Vann- Og Energiboring AS | Construction | 2005 |
| Vedproffen Da | Wholesale & retail | 2009 |
| Vemtech AS | Wholesale & retail | 2025 |
| Venlau Eiendom AS | Real estate | 2021 |
| Ventec AS | Construction | 1990 |
| Venture One AS | Information & communication | 2015 |
| Verktøymakeren AS | | 2026 |
| Verktøymakeren Eiendom AS | Manufacturing | 1999 |
| Versus AS | Real estate | 2015 |
| Vertech Offshore AS | Mining & quarrying | 2006 |
| Vertikalen AS | Hospitality | 2023 |
| Vestergate AS | | 2026 |
| Vestland Logistikk 2 AS | Transport & logistics | 2024 |
| Vestregate Eiendom AS | Real estate | 2010 |
| Vestregate Søtten AS | Real estate | 2020 |
| Vevne Group AS | Agriculture & fishing | 2009 |
| Vidar Nielsen AS | Construction | 2012 |