| Breeder Skandinavia AS | Wholesale & retail | 2025 |
| Briac AS | Other services | 2017 |
| Bright Vision AS | Arts & recreation | 2023 |
| Brukte Kontormøbler AS | Wholesale & retail | 1995 |
| Bryggeriet Fysioterapi Da | Health & social care | 2026 |
| Bryggeriet Tannlegesenter Da | Health & social care | 2013 |
| Brødr Stensby's Eftf AS | Hospitality | 1996 |
| Brødrene Sæthre AS | Real estate | 1968 |
| Brødrene Østbye AS | Manufacturing | 1979 |
| BTB Invest AS | Real estate | 2009 |
| Bths Eiendom AS | Real estate | 2019 |
| Buri Eiendom AS | Real estate | 2018 |
| Buri Holding AS | Wholesale & retail | 2018 |
| Business Partner Innlandet AS | Professional & scientific | 2020 |
| Bygg Team Eiendom AS | Real estate | 2002 |
| Bygg Team Utleie AS | Real estate | 2019 |
| Bygg Zdzislaw AS | Construction | 2015 |
| Bygg-Team AS | Construction | 1998 |
| Byggeklossen Elverum AS | Wholesale & retail | 2018 |
| Byggmester Bjørn Sætereng AS | Construction | 2017 |
| Byggservice Øst AS | Professional & scientific | 2013 |
| Byggtakst Elverum AS | Real estate | 2006 |
| Bygu Eiendom AS | Real estate | 2015 |
| Børrestuen Eiendom AS | Real estate | 1972 |
| C. Amundrud AS | | 2020 |
| Cafe Fryd Og Gammen Da | Hospitality | 2011 |
| Cagu Invest AS | | 2026 |
| Camptrail AS | Administrative & support | 2026 |
| Campus Elverum AS | Real estate | 2020 |
| Capri Collection Norge AS | Wholesale & retail | 2012 |
| Carbon Invest AS | Real estate | 2016 |
| Carisma Optikk Drift AS | Wholesale & retail | 2005 |
| Carisma Optikk Eiendom AS | Real estate | 2010 |
| Carisma Optikk Elverum AS | Wholesale & retail | 1996 |
| Catmas Invest AS | Real estate | 2022 |
| Cato Nystuen Holding AS | Construction | 2017 |
| Cbgb AS | Real estate | 2019 |
| Centrum Frisør - Elverum AS | Other services | 1989 |
| China Restaurant Zhu Ji-De Og Luo Guang-Rong Da | Hospitality | 1990 |
| CHOICE1 AS | Wholesale & retail | 2015 |
| Chrico Invest AS | Wholesale & retail | 2005 |
| Christianfjeld AS | Professional & scientific | 2023 |
| Chu AS | Real estate | 2024 |
| Cipressi AS | Professional & scientific | 2017 |
| City Bilpleie Elverum Da | Other services | 2012 |
| CN Maskinutleie AS | Administrative & support | 2021 |
| Contrazt AS | Arts & recreation | 2013 |
| Cozy Design AS | Professional & scientific | 2024 |
| Crossfit Elverum AS | Arts & recreation | 2016 |
| Curida AS | Manufacturing | 2015 |
| Curida Holding AS | Manufacturing | 2015 |
| Cut'N Go Elverum AS | Other services | 2020 |
| CWS AS | Information & communication | 2018 |
| Cyc AS | Real estate | 2018 |
| Cyc Holding AS | Real estate | 2021 |
| D. Sæter AS | Wholesale & retail | 2023 |
| Dabygg AS | Construction | 2018 |
| Dabygg Eiendom AS | Real estate | 2022 |
| Dabygg Holding AS | Real estate | 2022 |
| Dahl Maskinentreprenør AS | Agriculture & fishing | 2013 |
| Dalen, Dalen & Dalen Ans | Real estate | 2005 |
| Datakompetansesenteret AS | Wholesale & retail | 1983 |
| De Holistiske Psykologene AS | Health & social care | 2025 |
| De Små Grønne AS | Agriculture & fishing | 2025 |
| Delal Eiendom Elverum AS | Real estate | 2020 |
| Deluca Eye AS | Health & social care | 2024 |
| Dianor AS | Construction | 1983 |
| Dima Transport AS | Transport & logistics | 2026 |
| Ditt Tak Og Eiendom AS | Real estate | 2024 |
| Duger Fortsatt AS | Administrative & support | 2023 |
| Dyrhoff AS | Manufacturing | 2003 |
| Dyrhoff Eiendom AS | Real estate | 1994 |
| Dørlageret AS | Wholesale & retail | 2024 |
| E. L. Borg Eiendom AS | Health & social care | 2016 |
| E.Haugen AS | Real estate | 2021 |
| Ean Eiendom AS | Real estate | 2017 |
| Easy Frakt AS | Transport & logistics | 2023 |
| Ecit Elverum AS | Professional & scientific | 2019 |
| Eckbo Eiendom AS | Real estate | 2021 |
| Eco-Energi AS | Professional & scientific | 2025 |
| Eiendom Øst AS | Real estate | 2015 |
| Eiendom Østlandet AS | Real estate | 1997 |
| Eiendommen Frisk AS | Real estate | 2020 |
| Eiendomsspesialisten AS | Real estate | 2026 |
| Einar Hartz AS | Health & social care | 2012 |
| Eki Utvikling AS | Real estate | 2014 |
| Ekse Holding AS | | 2024 |
| El Bronko AS | Wholesale & retail | 2024 |
| Elekt Eiendom AS | Real estate | 2019 |
| Elgen Eiendomsutleie AS | Real estate | 2021 |
| Elgstua AS | Hospitality | 2006 |
| Elgstua Bygg AS | Real estate | 2010 |
| Elkjøp Stormarked Elverum AS | Wholesale & retail | 1993 |
| Ellegi Invest AS | Real estate | 2007 |
| Eltera Elverum AS | Construction | 2020 |
| Eltex Elverum AS | Construction | 2013 |
| Elvarheim Utbygging AS | Real estate | 2002 |
| Elverum Anleggservice AS | Construction | 2014 |
| Elverum Apotek AS | Wholesale & retail | 2024 |
| Elverum Asia Mat AS | Wholesale & retail | 2019 |