| Engevik Møbler AS | Wholesale & retail | 1989 |
| Englia Invest AS | Real estate | 2011 |
| Engliveien 42 AS | Real estate | 2018 |
| Entrep Altermark AS | Construction | 2025 |
| Erfag AS | Real estate | 2014 |
| Eriksen Driftstjenester AS | Administrative & support | 2026 |
| Eska Eiendom AS | Real estate | 2021 |
| Etick Holding AS | Real estate | 2020 |
| Ets Eiendom AS | Real estate | 2023 |
| Euro Car Wash Norge AS | Wholesale & retail | 2019 |
| Euromet AS | Manufacturing | 2017 |
| Euromet Holding AS | Manufacturing | 2017 |
| Ever Holding AS | Health & social care | 2021 |
| Evi Da | Arts & recreation | 2021 |
| Evida Holding AS | Wholesale & retail | 2015 |
| Evry Card Services AS | Information & communication | 2000 |
| Ewfur 508 Holding AS | | 2023 |
| Ex-On AS | Other services | 2022 |
| Explorana AS | Administrative & support | 2019 |
| Extra Leker Mo I Rana AS | Wholesale & retail | 2011 |
| F&G Holding AS | | 2018 |
| F.L Holding AS | | 2021 |
| Fabos AS | Administrative & support | 2013 |
| Fabos Holding AS | | 2019 |
| Fabrikkveien 7 AS | Real estate | 2020 |
| Fadas AS | Real estate | 1992 |
| Fageråsbakkene AS | Arts & recreation | 2018 |
| Fagforeningshuset AS | Real estate | 2022 |
| Fai Rumore AS | Hospitality | 2021 |
| Fammy Holding AS | Real estate | 2005 |
| Fci AS | Financial services | 2010 |
| Feg Invest AS | Financial services | 2013 |
| Ferda Caravan Service Mo I Rana AS | Other services | 2025 |
| Ferroglobe Mangan Norge AS | Manufacturing | 1990 |
| Fhe AS | Real estate | 2026 |
| Fia Holding AS | Real estate | 2000 |
| Finstad Fysioterapi AS | Health & social care | 2008 |
| Firma Urmaker Monsen AS | Wholesale & retail | 1988 |
| Fiskebua Mo I Rana AS | Wholesale & retail | 2017 |
| Fiskelysten AS | Professional & scientific | 2024 |
| Fisktjønnli Va AS | Construction | 2021 |
| Fixit AS | Professional & scientific | 2020 |
| FJ Flis & Naturstein AS | Construction | 2024 |
| Fjelldal AS | | 2026 |
| Fjellvang Uteanlegg AS | Construction | 2005 |
| Fjordgården Mo AS | Hospitality | 2009 |
| Fjordgården Mo Eiendom AS | Real estate | 2008 |
| Flamingo Kjole & Brudesalong AS | Wholesale & retail | 2018 |
| Flatlia Ved Da | Agriculture & fishing | 2022 |
| Flatås Kristiansen Holding AS | | 2023 |
| Fleksimaskin AS | Other services | 1991 |
| Flexi Eiendom AS | Other services | 1996 |
| Flystripa Yk Da | Hospitality | 2008 |
| FN Næring AS | Real estate | 2020 |
| FNH AS | | 2024 |
| Focus Dental AS | Health & social care | 2020 |
| Folk I Farta AS | Wholesale & retail | 1990 |
| Folk Og Røvere AS | Other services | 2023 |
| Forsmo Eiendom AS | Real estate | 2009 |
| Forsmo Maskiner & Transport AS | Construction | 1994 |
| Fot & Helse AS | Other services | 2016 |
| Fothelseklinikken Nygård AS | Other services | 2015 |
| Fotografendin AS | Professional & scientific | 2012 |
| Foton Invest AS | Manufacturing | 2015 |
| FR Nansensgt 2 AS | Real estate | 2007 |
| FR. Nansensgate 12 Mo AS | Real estate | 2000 |
| Fra a Til Å AS | Hospitality | 2014 |
| Frammarsvik Consulting AS | Professional & scientific | 2011 |
| Framsia Holding AS | | 2023 |
| Fredly Panorama Holding AS | Construction | 2018 |
| Fridtjof Nansens GT. 22 AS | Real estate | 2017 |
| Frikult AS | Education | 2002 |
| Frikult Grunnskole AS | Education | 2018 |
| Frikult Omsorg AS | Health & social care | 2017 |
| Frikultbarnehagen Båsmo AS | Education | 2022 |
| Frikultbarnehagen Ytteren AS | Education | 2022 |
| Frikultskolen AS | Education | 2008 |
| Friskgården Rana AS | Health & social care | 2006 |
| Fritidshuset AS | Real estate | 2008 |
| FRJ Holding AS | Administrative & support | 2012 |
| FRN 29 AS | Real estate | 2025 |
| Froto Eiendommer AS | Real estate | 2007 |
| Fryd Fotklinikk AS | Health & social care | 2024 |
| Fryd Frisør Og Velvære AS | Other services | 2021 |
| Fuglstad Maskin AS | Administrative & support | 2020 |
| Fundanor AS | Wholesale & retail | 2015 |
| Fyllinga Utleie AS | Real estate | 2006 |
| G. Berntsen AS | Construction | 2004 |
| G.Bruun AS | Transport & logistics | 2013 |
| Gabor AS | Professional & scientific | 2010 |
| Gamle Nesnaveien Holding AS | | 2022 |
| Gan Holding AS | Real estate | 2008 |
| Garn & Tekstil AS | Wholesale & retail | 2002 |
| Gartneritunet Mosjøen AS | Real estate | 2010 |
| Gas Utvikling AS | Real estate | 2007 |
| Gassteknikk AS | Professional & scientific | 2026 |
| Gassteknikk Holding AS | | 2026 |
| Gassteknikk Limited Nuf | Professional & scientific | 2010 |
| GB Almli AS | Health & social care | 2025 |
| Geep AS | Real estate | 2024 |