| Abm AS | Manufacturing | 2024 |
| Adi Eiendom AS | Real estate | 2012 |
| Aider Gjøvik AS | Professional & scientific | 2025 |
| Ans Autofix | Other services | 1989 |
| Ans Glasscoating Gjøvik | Construction | 1989 |
| Ans Vestoppland Karosseri | Real estate | 1988 |
| Arild Berg AS | Arts & recreation | 1995 |
| Arnt Hagen Holding AS | Financial services | 2005 |
| AS Maskinservice | Mining & quarrying | 1982 |
| Asfaltfabrikken AS | Manufacturing | 2010 |
| Auto Bilpleie AS | Other services | 2013 |
| Autocentret AS | Wholesale & retail | 2005 |
| Autoservice Gjøvik AS | Other services | 2013 |
| Avstikkeren 3 AS | Real estate | 2025 |
| B&M Wajs AS | Hospitality | 2021 |
| Backe Oppland AS | Construction | 1985 |
| Basl Eiendom AS | Construction | 2025 |
| Beh Invest AS | Real estate | 2015 |
| Bergseng-Jostad Eiendom AS | Real estate | 2013 |
| Bilberging Innlandet AS | Transport & logistics | 2018 |
| Bilskadesenteret Eiendom Gjøvik AS | Real estate | 2021 |
| Bjørn Normann Holding AS | | 2023 |
| BLH Eiendom AS | Real estate | 2013 |
| BLH Gruppen AS | Real estate | 2015 |
| BLH Næringseiendom AS | Real estate | 2022 |
| Blikkenslageren Innlandet AS | Construction | 2025 |
| BMB Auto Service AS | Other services | 2017 |
| BMB Bil AS | Wholesale & retail | 2014 |
| Braathen Og Brenden Utleie AS | Real estate | 1999 |
| Bredesen & Værøy Transport | Transport & logistics | 1986 |
| Brisklia Invest AS | | 2021 |
| Brusformidlingen Hunndalen AS | Wholesale & retail | 2003 |
| Byggetegninger AS | Professional & scientific | 2023 |
| Byggmestrene Braathen Og Brenden AS | Construction | 1999 |
| Byggteam INNLANDET1 AS | Construction | 2023 |
| Byservice AS | Administrative & support | 1997 |
| Bålstedet AS | Wholesale & retail | 2017 |
| Carnis AS | Manufacturing | 2023 |
| CFT Invest AS | Financial services | 2010 |
| Compact Kettlebells AS | Agriculture & fishing | 2017 |
| Consai AS | Information & communication | 2026 |
| Cumu Holding AS | Professional & scientific | 2025 |
| Curator Wiik & Co AS | Other services | 2024 |
| D.H. Sandvik Holding AS | | 2025 |
| D.H. Sandvik Tjenester AS | Administrative & support | 2025 |
| Dag Erland Olsen AS | Real estate | 2012 |
| Damsletta AS | Construction | 2019 |
| Damvegen 6 AS | Real estate | 2018 |
| Ddinnredning AS | Manufacturing | 2018 |
| Drift & Produksjon AS | Information & communication | 2009 |
| Dte - Holding AS | Wholesale & retail | 2011 |
| Dte Eiendom AS | Wholesale & retail | 2014 |
| Dte Systems AS | Wholesale & retail | 2014 |
| Dun of Norway AS | Wholesale & retail | 2010 |
| E&P Byggservice AS | Construction | 2019 |
| Eat Gjøvik AS | Education | 2015 |
| Edvin Hansen Eiendom AS | Manufacturing | 1972 |
| Edvind Hansen AS | Manufacturing | 2009 |
| Eiendomsfabrikken AS | Real estate | 2024 |
| Ek Development AS | | 2026 |
| Elektro Partner AS | Construction | 1996 |
| Em Invest AS | Manufacturing | 1995 |
| Esben Furuseth Holding AS | Real estate | 2015 |
| F.Odberg Holding AS | Construction | 2021 |
| Famne Arbeid AS | Health & social care | 1990 |
| Finn Simenstad AS | Construction | 1989 |
| Flex Fitness Gym Elverum AS | Arts & recreation | 2025 |
| Flex Fitness Gym Norway AS | Arts & recreation | 2024 |
| Flex Sport Club AS | Arts & recreation | 2020 |
| Framnes Bil AS | Wholesale & retail | 2017 |
| Framnesgården AS | Real estate | 2017 |
| Fremstad Invest AS | Real estate | 1993 |
| Frofix Eiendom AS | Real estate | 2020 |
| Frofix Motor AS | Other services | 2020 |
| Fron Traktor Service Gjøvik AS | Wholesale & retail | 2024 |
| Fyr Og Flyt Da | Other services | 2026 |
| Furulia Holding AS | Financial services | 2005 |
| Gamle Blomhaug Skole AS | Real estate | 2021 |
| Gateria AS | Hospitality | 2025 |
| Gjøvik Bilformidling Da | Wholesale & retail | 2009 |
| Gjøvik Bilsalg AS | Wholesale & retail | 2023 |
| Gjøvik Bilverksted AS | Other services | 2026 |
| Gjøvik Boligutvikling AS | Real estate | 2019 |
| Gjøvik Byggservice AS | Construction | 2007 |
| Gjøvik Eiendomspartner AS | Construction | 2005 |
| Gjøvik Graveservice AS | Construction | 1969 |
| Gjøvik Hest Og Hund AS | Wholesale & retail | 2014 |
| Gjøvik Håndverkertjenester AS | Administrative & support | 2012 |
| Gjøvik Kran Og Hydraulikk AS | Wholesale & retail | 1988 |
| Gjøvik Maskindrift AS | Construction | 2020 |
| Gjøvik Næringssenter AS | Real estate | 2015 |
| Gjøvik Utemiljø AS | Administrative & support | 2019 |
| Gjøvik Vulk Dekksenter AS | Other services | 1990 |
| Glenns Billakkering AS | Other services | 2007 |
| Glum-Invest AS | Financial services | 2007 |
| Govenue AS | Information & communication | 2026 |
| Gromlyd AS | Wholesale & retail | 2020 |
| Grønsås Vikleverksted AS | Wholesale & retail | 1988 |
| GS Elektro Gjøvik AS | Construction | 2010 |
| GUV1 Bil AS | Wholesale & retail | 2022 |