| Indie Music Publishing AS | Information & communication | 2020 |
| Indie Music Rights Ltd Nuf | | 2024 |
| Indie Publishing Rights AS | Information & communication | 2024 |
| Indie Rec Masters AS | Administrative & support | 2024 |
| Indiflame Restaurant & Bar AS | Hospitality | 2025 |
| Indigo Gruppen AS | | 2017 |
| Indigoboom AS | Information & communication | 2014 |
| Indii Creation AS | Wholesale & retail | 2020 |
| Indirectly AS | | 2023 |
| Indisk Takeaway AS | Hospitality | 2023 |
| Indiska 1901 AS | Wholesale & retail | 2004 |
| Inditex Norge AS | Wholesale & retail | 1999 |
| Indnor Eiendom AS | Real estate | 2021 |
| Indnor Holdings AS | | 2026 |
| Indo-Scand AS | Information & communication | 1986 |
| Indonor AS | Information & communication | 2010 |
| Indre AS | | 2026 |
| Indre Eiendom AS | Real estate | 1996 |
| Indre Oslo Dampselskap AS | Other services | 2024 |
| Indre Sandvik AS | Professional & scientific | 2013 |
| Indreconsult AS | | 2021 |
| Indrelid AS | Professional & scientific | 2026 |
| Indremedisin Enger AS | Health & social care | 2014 |
| Indris Pro AS | Arts & recreation | 2001 |
| Induct AS | Information & communication | 2007 |
| Inductive AS | Information & communication | 2014 |
| Inductive Culture Nuf | Arts & recreation | 2011 |
| Indunor AS | Construction | 2014 |
| Indunor Holding AS | Construction | 2020 |
| Indus Travel | Administrative & support | 2016 |
| Industri Anlegg AS | Real estate | 1993 |
| Industri Energi Holding AS | Real estate | 2007 |
| Industri Og Boligeiendom AS | Real estate | 1963 |
| Industri Og VVS Teknikk AS | Construction | 1996 |
| Industri Rekruttering AS | Administrative & support | 2025 |
| Industri-Matematik International AS | Information & communication | 2013 |
| Industrial AS | | 2021 |
| Industrial Juncture AS | | 2024 |
| Industribehov AS | Wholesale & retail | 1994 |
| Industribehov Holding AS | Real estate | 1986 |
| Industridesign AS | Professional & scientific | 2018 |
| Industrieiendom Skien AS | Real estate | 2020 |
| Industriens Kompetansefond AS | Education | 2025 |
| Industriens Og Eksportens Hus AS | Real estate | 2010 |
| Industrier AS | | 2023 |
| Industrietechnik Samek GBT | Construction | 2005 |
| Industrifinans Aif-Forvalter AS | Financial services | 2018 |
| Industrifinans AS | Real estate | 2019 |
| Industrifinans Direkte Investeringer AS | Financial services | 2005 |
| Industrifinans Eiendom AS | Real estate | 2017 |
| Industrifinans Eiendomsfond AS | Financial services | 2019 |
| Industrifinans Eiendomsforvaltning AS | Real estate | 2022 |
| Industrifinans Forretningsførsel AS | Professional & scientific | 2008 |
| Industrifinans Forvaltning AS | Financial services | 2008 |
| Industrifinans Kapitalforvaltning AS | Financial services | 2005 |
| Industrifinans Kino 2 Eiendom AS | Real estate | 2004 |
| Industriforsikring AS | Financial services | 1920 |
| Industrigata 1 AS | Real estate | 2024 |
| Industrigata 11 AS | Real estate | 2017 |
| Industrigata 22 AS | Real estate | 1968 |
| Industrigata 49 AS | Real estate | 2011 |
| Industrigata 5 AS | Real estate | 2020 |
| Industrigata 52A AS | Real estate | 2008 |
| Industrigata 58 AS | Real estate | 2006 |
| Industrigata Holding AS | Real estate | 2020 |
| Industrigata Utvikling AS | Real estate | 2010 |
| Industrigaten 34 AS | Real estate | 2001 |
| Industrigaten 36 AS | Real estate | 2011 |
| Industrigaten 46 AS | Real estate | 2019 |
| Industrigaten 59 AS | Real estate | 2016 |
| Industriinvesteringer AS | Manufacturing | 2010 |
| Industrikapital AS | | 2025 |
| Industriklattrarna Sverige Nuf | Administrative & support | 2023 |
| Industrimøbler AS | Wholesale & retail | 2011 |
| Industritoppen 14 AS | Real estate | 2007 |
| Industrivegen 10 AS | Real estate | 2012 |
| Industrivegen 12 AS | Real estate | 2012 |
| Industrivegen 2 Jessheim AS | Real estate | 2021 |
| Industrivegen 26 AS | Real estate | 2022 |
| Industrivegen 27 AS | Real estate | 2024 |
| Industriveien 12 Hagan AS | Real estate | 2015 |
| Industriveien 13 O B Wiik Ans | Real estate | 1986 |
| Industriveien 13 Ski AS | Real estate | 2018 |
| Industriveien 13 Trondheim AS | Real estate | 2011 |
| Industriveien 14 Skedsmo AS | Real estate | 2018 |
| Industriveien 15 AS | Real estate | 2014 |
| Industriveien 17 Ski AS | Real estate | 2006 |
| Industriveien 19 AS | Real estate | 2020 |
| Industriveien 2 Rygge AS | Real estate | 2006 |
| Industriveien 25 Eiendom AS | Real estate | 2019 |
| Industriveien 26 AS | Real estate | 2018 |
| Industriveien 3 Holding AS | Real estate | 2025 |
| Industriveien 3 Utvikling AS | Real estate | 2024 |
| Industriveien 30 AS | Real estate | 2020 |
| Industriveien 4 B AS | Real estate | 2007 |
| Industriveien 4 C AS | Real estate | 2019 |
| Industriveien 49 a AS | Real estate | 1995 |
| Industriveien 49 AS | Real estate | 2004 |
| Industriveien 49 B AS | Real estate | 2007 |
| Industriveien 6 Ans | Real estate | 1991 |