| Julie Horne Academy AS | Education | 2024 |
| Julie Invest AS | | 2026 |
| Julie Josephine AS | Wholesale & retail | 2015 |
| Julie Nikoline & Alfred Angel AS | | 2023 |
| Julie Rønning AS | | 2023 |
| Julie Strømsvåg AS | Arts & recreation | 2022 |
| Juliesuss Invest AS | | 2021 |
| Juliet Kolonial Ans | Wholesale & retail | 1989 |
| Julin AS | Professional & scientific | 2014 |
| Julin Kapital AS | Real estate | 2005 |
| Julinco AS | Financial services | 2001 |
| Juline Holding AS | Administrative & support | 2021 |
| Julip Invest AS | Real estate | 2015 |
| Julius & Ørenberg Bokbinderi AS | Manufacturing | 2025 |
| Julius Eiendom AS | Real estate | 2005 |
| Julius Holding AS | | 2023 |
| Julla AS | | 2025 |
| Julma Holding AS | | 2023 |
| Julmust Holding AS | | 2021 |
| Julseb Holding AS | | 2025 |
| Julsrud Holding AS | | 2025 |
| Julton AS | | 2020 |
| Julu Investment AS | | 2020 |
| July AS | Professional & scientific | 2021 |
| Jum Advokatfirma AS | Professional & scientific | 2018 |
| Jumabygg AS | Construction | 2025 |
| Jumbo Mat Da | Hospitality | 2015 |
| Jumbo Transport AS | Transport & logistics | 2008 |
| Jumisku AS | | 2023 |
| Jun Fan AS | Information & communication | 2022 |
| Junameit AS | Wholesale & retail | 2007 |
| Junction Pool Capital AS | | 2022 |
| Junel AS | Administrative & support | 2024 |
| Junerud Holding AS | | 2025 |
| Junet AS | Wholesale & retail | 2017 |
| Junf Invest AS | Real estate | 2020 |
| Jung Holding AS | | 2023 |
| Junge & Co AS | Wholesale & retail | 2017 |
| Junge Holding AS | | 2023 |
| JUNGE Norsk avdeling av utenlandsk foretak NUF | Manufacturing | 1997 |
| Jungel Pizza Adamstuen AS | Hospitality | 2023 |
| Jungel Pizza AS | Hospitality | 2019 |
| Jungel Pizza Sagene AS | Hospitality | 2022 |
| Jungel Pizza Torshov AS | Hospitality | 2022 |
| Jungeltelegrafisk Byrå AS | Professional & scientific | 2023 |
| Jungheinrich Business Services Croatia D.O.O. | Information & communication | 2022 |
| Jungheinrich Norge AS | Wholesale & retail | 1969 |
| Junglemap AS | Information & communication | 2002 |
| Juni AI AS | Information & communication | 2016 |
| Juni AS | Real estate | 2002 |
| Juni Holding AS | Professional & scientific | 2019 |
| Junic AS | Real estate | 1904 |
| Junik AS | Professional & scientific | 2025 |
| Junin AS | Financial services | 2017 |
| Junior Barneklær AS | Wholesale & retail | 1983 |
| Junior Holding AS | Real estate | 2012 |
| Junior Production AS | Arts & recreation | 2005 |
| Junior Sandvika AS | Wholesale & retail | 2021 |
| Juniors Holding AS | Financial services | 2013 |
| Juniper AS | Hospitality | 2025 |
| Juniper Bulk AS | Transport & logistics | 2021 |
| Junius AS | | 2025 |
| Junk Food Holding AS | Hospitality | 2020 |
| Junker Bidco AS | | 2025 |
| Junker Holdco AS | | 2025 |
| Junker Midco AS | | 2025 |
| Junker Topco AS | | 2025 |
| Juno Invest AS | Real estate | 2004 |
| Juno Media AS | Arts & recreation | 2012 |
| Juno Music Da | Arts & recreation | 2021 |
| Junova Frierfjorden AS | Professional & scientific | 2023 |
| Junto AS | Real estate | 2021 |
| Jupella AS | Financial services | 2017 |
| Jupiter 1 AS | Real estate | 2022 |
| Jupiter 3 AS | Real estate | 2022 |
| Jupiter Capital Management AS | Real estate | 2010 |
| Jupiter Finans AS | Real estate | 2013 |
| Jura AS | Professional & scientific | 1998 |
| Jura Sweden Filial Norge Nuf | Wholesale & retail | 2016 |
| Juret AS | Hospitality | 2025 |
| Jurio Norge AS | Professional & scientific | 2023 |
| Jurisdirection AS | Professional & scientific | 2021 |
| Jurist Sørfonn AS | Professional & scientific | 2024 |
| Juristenes Hus AS | Real estate | 1990 |
| Juristråd AS | Professional & scientific | 2025 |
| Juritzen Forlag AS | Information & communication | 2019 |
| Jurs Consulting AS | Financial services | 2007 |
| Jurøko AS | Professional & scientific | 2025 |
| Jusi Holding AS | Financial services | 2014 |
| Jusinar AS | Financial services | 2015 |
| Juso Invest AS | | 2021 |
| Juspay AS | Information & communication | 2024 |
| Jussnett AS | Real estate | 2019 |
| Jussystemer AS | Information & communication | 1993 |
| Just a Name AS | | 2022 |
| Just Brands AS | Wholesale & retail | 2011 |
| Just Brochs Gate AS | Real estate | 2021 |
| Just Cruzin Production Ans | Administrative & support | 1998 |
| Just Cruzin' Production AS | Administrative & support | 1998 |
| Just Dance Da | Education | 2009 |