| Innherredsveien 9 AS | Trondheim | 2009 |
| Innherredsveien Eiendom AS | Trondheim | 2017 |
| Innherredsveien Handelseiendom AS | Oslo | 2025 |
| Inni Hus & Hytter AS | Billingstad | 1998 |
| Innkjøpslaget Kyrksæterøra SA | Kyrksæterøra | 1993 |
| Innlaget 5 AS | Revetal | 2006 |
| Innlagveien 2 AS | Tønsberg | 2015 |
| Innland Eiendom AS | Ingeberg | 1996 |
| Innlandet Bolig & Eiendomsutvikling AS | Brumunddal | 2019 |
| Innlandet Bolig & Utleie AS | Brumunddal | 2020 |
| Innlandet Bolig- Og Fjellhytter AS | Leira I Valdres | 2019 |
| Innlandet Boliger AS | Verdal | 2022 |
| Innlandet Boligprosjekt AS | Gjøvik | 2019 |
| Innlandet Boligutleie AS | Brårud | 2022 |
| Innlandet Boligutvikling AS | Gjøvik | 2022 |
| Innlandet Butikkeiendom AS | Molde | 2023 |
| Innlandet Bygg Og Servicetjenester AS | Furnes | 2024 |
| Innlandet Bygg Og Takst AS | Dokka | 2017 |
| Innlandet Eiendom 1 AS | Gjøvik | 2019 |
| Innlandet Eiendom AS | Raufoss | 2012 |
| Innlandet Eiendom Og Utleie AS | Lena | 2014 |
| Innlandet Eiendomsmegling AS | Hamar | 2023 |
| Innlandet Eiendomspartner AS | Oslo | 2020 |
| Innlandet Eiendomsutleie AS | Gjøvik | 2021 |
| Innlandet Eiendomsutvikling AS | Brumunddal | 1997 |
| Innlandet Helsehus AS | Gjøvik | 2024 |
| Innlandet Næringsmegling AS | Lillehammer | 2016 |
| Innlandet Næringsutvikling AS | Gjøvik | 2013 |
| Innlandet Service & Vedlikehold AS | Gjøvik | 2013 |
| Innlandet Studentboliger AS | Oslo | 2021 |
| Innlandet Takstservice AS | Gjøvik | 2022 |
| Innlandet Treindustri AS | Rudshøgda | 2016 |
| Innlandet Utleiebolig AS | Brumunddal | 2020 |
| Innlandsporten Eiendom 2 AS | Oslo | 2019 |
| Innlandsporten Eiendom AS | Oslo | 2003 |
| Innlandsutvikling AS | Brumunddal | 1996 |
| Innmann AS | Ler | 2021 |
| Innmarken AS | Fjell | 2023 |
| Innocamp AS | Steinkjer | 1987 |
| Innocreate AS | Bekkestua | 2011 |
| Innogrønn AS | Notodden | 2014 |
| Innohub AS | Steinkjer | 2018 |
| Innoinvest Rødøy Aps | Dk-2100 Købernhavn Ø | 2016 |
| INNOV8 AS | Jessheim | 2015 |
| INNOV9 AS | Jessheim | 2024 |
| Innova Eiendom AS | Oslo | 2015 |
| Innova Invest AS | Nyborg | 1979 |
| Innovasjon Jørpeland AS | Jørpeland | 2018 |
| Innovasjon Rørvik AS | Rørvik | 1999 |
| Innovasjonshuset Eiendom AS | Karmsund | 2016 |
| Innovasjonsparken AS | Stavanger | 1998 |
| Innovasjonsparken Prosjektutvikling AS | Stavanger | 2018 |
| Innovation Dock AS | Stavanger | 2015 |
| Innovation Holding AS | Gjesåsen | 2003 |
| Innovativ Bolig AS | Oslo | 2019 |
| Innovativ Utvikling AS | Furnes | 2019 |
| Innovator AS | Porsgrunn | 2018 |
| Innovent 1 AS | Moss | 2024 |
| Innovision AS | Moss | 2003 |
| Innoværet AS | Smøla | 2023 |
| Innset Samfunnshus Ba | Bardu | 2002 |
| Innsikten Eiendom Brekstad AS | Brekstad | 2005 |
| Innsikten Eiendom Singsaker AS | Trondheim | 2004 |
| Innspurten 7 AS | Lysaker | 2019 |
| Innstadvika Eiendom AS | Svolvær | 2017 |
| Innstranda Eiendom AS | Bodø | 2016 |
| Innstranda Grendahus SA | Tørvikbygd | 1998 |
| Innstrandveien 1 AS | Bodø | 2026 |
| Innstrandveien 7 Invest AS | Oslo | 2010 |
| Inntian Grunneierlag SA | Sistranda | 1998 |
| Inntre Eiendom AS | Steinkjer | 2003 |
| Inntre Energi Holding AS | Steinkjer | 2013 |
| Innuce AS | Oslo | 2007 |
| Innvekst AS | Rådal | 2009 |
| Innvik Eiendom AS | Innvik | 2023 |
| Innvik Holding AS | Innvik | 2007 |
| Innvik Næringspark AS | Innvik | 2005 |
| Innviken AS | Drammen | 2005 |
| Ino Eiendom AS | Langhus | 2013 |
| Inocare Eiendom AS | Haugesund | 2021 |
| Inord Eiendom AS | Trondheim | 2015 |
| Inordeiendom AS | Finnsnes | 2023 |
| Inovit AS | Oslo | 2015 |
| Inoxo AS | Oslo | 2003 |
| Inp Eiendom AS | Leinstrand | 2020 |
| Inperiva Eiendom AS | Oslo | 1999 |
| Inperiva Tomt AS | Oslo | 2007 |
| Inplag SP. Z O.O. Nuf | 53-033 Wroclaw | 2024 |
| Inpower Invest AS | Brattvåg | 2010 |
| Inpro Eiendom AS | Hauge I Dalane | 2023 |
| Inproco Holding AS | Larvik | 2020 |
| Inreko AS | Oslo | 1986 |
| Inrigo Eiendom AS | Heimdal | 2016 |
| Inro AS | Stavanger | 2006 |
| Inro Holding AS | Fornebu | 2010 |
| Insania AS | Oslo | 2014 |
| Insenti Senter Holding AS | Oslo | 2016 |
| Insenti Utvikling AS | Oslo | 2016 |
| Insert Coins AS | Porsgrunn | 2016 |
| Insert Name Here AS | Kristiansand S | 2021 |