| Toten Varmepumper AS | Construction | 2026 |
| Totenhus Utleie AS | Real estate | 2016 |
| Totenslagere AS | Arts & recreation | 2019 |
| Tov Røysland Ønh AS | Health & social care | 2012 |
| Tower 19 AS | | 2021 |
| TP Entreprenør AS | Construction | 2021 |
| TR8 Invest AS | | 2021 |
| Trafikkopplæring Innlandet AS | Education | 2020 |
| Traktor Og Redskap AS | Wholesale & retail | 2019 |
| Tranberg Gård AS | Real estate | 1943 |
| Tranberg Holding AS | Real estate | 2001 |
| Tranberg Panorama AS | Real estate | 2014 |
| Tranberg Utvikling AS | Real estate | 2020 |
| Tre Knepp Opp AS | Professional & scientific | 2025 |
| Trebua Holding AS | Financial services | 2005 |
| Trettsveen Bygg AS | Construction | 2016 |
| Troas AS | Administrative & support | 2020 |
| Trojaco Kurs Og Konferanser Ans | Education | 2004 |
| Tromar AS | | 2005 |
| Trond Børresen AS | Financial services | 2005 |
| Trondhjemsvegen 11 Gjøvik AS | Real estate | 2017 |
| Trondhjemsvegen 9 Gjøvik AS | Real estate | 2016 |
| Trondhjemsveien 10 AS | Real estate | 1994 |
| TRV 7 AS | Real estate | 2021 |
| Trysiltunet 14C AS | Real estate | 2017 |
| Tråll AS | Professional & scientific | 2012 |
| Tuka Sport AS | Wholesale & retail | 2017 |
| Tuyo Design Studio AS | Professional & scientific | 2016 |
| Tyritech AS | Information & communication | 2022 |
| Thomtes Trafikkskole A/S | Education | 1982 |
| Tollefsrud AS | Real estate | 1975 |
| Tøftum Invest AS | | 2005 |
| Tømrermester Roger Knutsen AS | Construction | 2020 |
| Ue Capital AS | Real estate | 2021 |
| Ulldotten Garn AS | Wholesale & retail | 2024 |
| Underground Studio AS | Real estate | 2017 |
| Ungana AS | Professional & scientific | 2023 |
| United Invest AS | Wholesale & retail | 2005 |
| Uno Hestesport AS | Wholesale & retail | 2012 |
| Upperli AS | Information & communication | 2019 |
| Urban Smash AS | Hospitality | 2026 |
| Urek AS | Professional & scientific | 2005 |
| Utleieforvaltning AS | Real estate | 2023 |
| Utleieren Eiendom AS | Real estate | 2000 |
| Vallevegen 12-14 AS | Real estate | 2021 |
| Vallevegen 16-18 AS | Real estate | 2021 |
| Vardal Eiendom AS | Real estate | 2005 |
| Vardal Traktordrift AS | Agriculture & fishing | 2019 |
| Vardalsåsen Fellesveganlegg SA | Real estate | 1964 |
| Varden Hytter AS | Real estate | 2022 |
| Vassenden Investeringer AS | Real estate | 2000 |
| Vazelina Bilopphøggers Ans | Arts & recreation | 2004 |
| Vedkameraten Ans | Manufacturing | 2023 |
| Vei 2 Go Trafikkskole AS | Education | 2025 |
| Veiberg Invest AS | Wholesale & retail | 2019 |
| Veidemenn AS | Agriculture & fishing | 2002 |
| Veierød Eiendom AS | Real estate | 1969 |
| Veiledia AS | | 2025 |
| Vektor Prosjekt AS | Professional & scientific | 2018 |
| Vektor-E A/S | Professional & scientific | 1985 |
| Velora Grill & Pizzeria AS | Hospitality | 2023 |
| Venthor AS | Other services | 2018 |
| Verdikjede AS | Professional & scientific | 2015 |
| Verdiløftet AS | Professional & scientific | 2026 |
| Verkstedflyt AS | Information & communication | 2023 |
| Vertex Eiendom AS | Real estate | 2026 |
| Vertex Motors AS | Administrative & support | 2026 |
| Vesi AS | Professional & scientific | 2016 |
| Veslebjønn Invest AS | Professional & scientific | 2017 |
| Vesterås AS | Real estate | 2011 |
| Vesterås Invest AS | | 2025 |
| Vesteråsvegen Skogsbilvegforening | Construction | 2000 |
| Vestlandsklima AS | Construction | 2025 |
| Vestre Totenveg 45 AS | Real estate | 1969 |
| Vestvind AS | | 2026 |
| Veto Gjøvik AS | Real estate | 2012 |
| Vetug Holding AS | Professional & scientific | 2020 |
| VH Eiendom Og Invest AS | Real estate | 2014 |
| Vhau AS | | 2025 |
| Vi Prøver AS | | 2025 |
| Vibes Kafe AS | Hospitality | 2020 |
| Viburnum AS | | 2024 |
| Vidipix AS | Information & communication | 2022 |
| Vidsyn Eiendom AS | Real estate | 2020 |
| Vidunder AS | Information & communication | 2026 |
| Vika AS | Wholesale & retail | 1997 |
| Viken Ved Og Veg AS | Manufacturing | 2024 |
| Vikersveen Invest AS | | 2015 |
| Viking Bygg Norge AS | Real estate | 2019 |
| Vilde Bratland Hansen AS | Arts & recreation | 2025 |
| Vile Invest AS | Professional & scientific | 2025 |
| Vindhjulfabrikken AS | Manufacturing | 2022 |
| Vingaarden AS | Real estate | 2021 |
| Vinkompaniet AS | Professional & scientific | 2023 |
| Vinnerbongen Norge AS | Arts & recreation | 2016 |
| Vinstra Handelspark AS | Real estate | 2016 |
| Visit Øst-Norge SA | Administrative & support | 1990 |
| Visitcard AS | Information & communication | 2014 |
| Vitensenteret Innlandet AS | Arts & recreation | 2003 |
| Vixel AS | Professional & scientific | 2014 |