| Imedici AS | Asker | 2021 |
| Imge Helse AS | Alta | 2012 |
| Imha AS | Stjørdal | 2026 |
| Iml Osteopati AS | Oslo | 2019 |
| Imle AS | Oslo | 2023 |
| Immortal Me AS | Sirevåg | 2023 |
| Impuls Helse Ski AS | Ski | 2024 |
| Impunitas AS | Hafrsfjord | 2010 |
| Imunnen AS | Trondheim | 2020 |
| In Acie AS | Bodø | 2018 |
| In Vitam Cotidianam AS | Mandal | 2024 |
| Ina Haugen AS | Nittedal | 2022 |
| Ina Parelius AS | Mo I Rana | 2013 |
| Inbalance Livsstil AS | Klæbu | 2022 |
| Incisor Holding AS | Oslo | 2020 |
| Incita Holding AS | Hurdal | 2007 |
| Includia Omsorg AS | Røyken | 2025 |
| Inco AS | Stavanger | 1992 |
| Incrementum Helse AS | Lørenskog | 2021 |
| Inderøy Legesenter AS | Inderøy | 2012 |
| Indras Fotterapi AS | Drammen | 2017 |
| Indre Fosen Tannklinikk Drift AS | Rissa | 2022 |
| Indre Salten Logopedi AS | Valnesfjord | 2020 |
| Indre Sula Fysio & Velvære Ans | Eidsnes | 2007 |
| Indre Sula Fysio Og Velvære AS | Eidsnes | 2014 |
| Indre Østfold Fysiosenter AS | Mysen | 2022 |
| Indre Østfold Hjertesenter AS | Askim | 2019 |
| Indremedisin Enger AS | Oslo | 2014 |
| Indrevær AS | Sarpsborg | 2021 |
| Indus AS | Vøyenenga | 2007 |
| Ine C.Thorkildssen AS | Vormsund | 2013 |
| Infancia AS | Oslo | 2019 |
| Infin Holding AS | Mosterøy | 2021 |
| Inga Etterlid AS | Rognan | 2021 |
| Inga Petrine Grøtte AS | Selbu | 2018 |
| Ingebjørg Larsen AS | Trondheim | 2026 |
| Ingelas Holding AS | Lommedalen | 2023 |
| Inger Marie Røn AS | Jessheim | 2025 |
| Inger Skjold Bratli Holding AS | Østerås | 2024 |
| Inger Støles Fysioterapi AS | Mandal | 2023 |
| Inger-Lise Rasmussen Familieveiledning AS | Porsgrunn | 2026 |
| Ingers Helse Og Velvære AS | Grong | 2020 |
| Ingrid Eskeland | Stord | 2013 |
| Ingrid Harsem AS | Nøtterøy | 2014 |
| Ingrid Prytz Berset AS | Ålesund | 2020 |
| Ingunn Vatnøy AS | Oslo | 2017 |
| Ingvild Langli Invest AS | Rørvik | 2020 |
| Ingvild Nakstad Helsetjenester AS | Drammen | 2024 |
| Inicio AS | Oslo | 2023 |
| Injeksjonsspesialisten AS | Trondheim | 2014 |
| Inkaway AS | Gjøvik | 2017 |
| Inkludering Og Mestring AS | Fredrikstad | 2025 |
| Inkludia AS | Kristiansund N | 2024 |
| Inkludia Utvikling AS | Kristiansund N | 2021 |
| Inkludmi AS | Oslo | 2025 |
| Inkludo AS | Tonstad | 1998 |
| Inko AS | Harstad | 1964 |
| Inko Eiendom AS | Harstad | 2021 |
| Inko Holding AS | Harstad | 2021 |
| Inko Holding Gjøvik AS | Gjøvik | 2011 |
| Inmed AS | Hitra | 2018 |
| Inn I Træet Gård AS | Seim | 2021 |
| Inn På Homnes Tun AS | Steinkjer | 2022 |
| Inn På Tunet Nesteby Øvre AS | Alvdal | 2024 |
| Inn På Tunet Norge SA | Follafoss | 2016 |
| Inn På Tunet Øvre Sandbugard AS | Vågå | 2013 |
| Innate Life AS | Sandnes | 2010 |
| Inner Melody AS | Stavanger | 2026 |
| Innherred Aesthetics AS | Levanger | 2026 |
| Innherred Helsehus AS | Levanger | 2013 |
| Innherred Idrettsmedisin AS | Levanger | 2015 |
| Innherred Kirurgi AS | Levanger | 2017 |
| Innherred Kvinneklinikk AS | Levanger | 2025 |
| Innherred Ultralydklinikk AS | Levanger | 2021 |
| Innherred Øyeklinikk AS | Levanger | 2014 |
| Innlandet Bo Og Omsorg AS | Follebu | 2021 |
| Innlandet Gastrosenter AS | Gjøvik | 2025 |
| Innlandet Helse Og Fysioterapi AS | Moelv | 2020 |
| Innlandet Legesenter AS | Hamar | 2021 |
| Innlandet Logopedtjeneste AS | Hov | 2025 |
| Innlandet Øyelegesenter Ans | Lillehammer | 2019 |
| Innlandsgynekologen AS | Lillehammer | 2017 |
| Innlandstjenester AS | Ottestad | 2023 |
| Innomsorg AS | Nordre Toten | 2021 |
| Innovi AS | Trøgstad | 1992 |
| Innro AS | Arendal | 2026 |
| Innsia Helhetsterapi AS | Hitra | 2018 |
| Innsikt Psykologbistand AS | Oslo | 2022 |
| Innsiktute AS | Åros | 2023 |
| Innstrand AS | Sandefjord | 2018 |
| Innstranda Legesenter AS | Bodø | 2015 |
| Inocurea AS | Drøbak | 2008 |
| Inovia Invest AS | Oslo | 2015 |
| Insamlingsstiftelsen Barnsamariten | 564 33 Bankeryd | 2017 |
| Insamlingsstiftelsen Rise-Up | Se-1135 Stockholm | 2021 |
| Inspirator AS | Oslo | 2013 |
| Inspire Helse AS | Mandal | 2025 |
| Inst Personleg Utvikling AS | Årdalstangen | 2025 |
| Institute for Neutral Energy - Dizens AS | Trondheim | 1999 |
| Institutionen for Socialt Boligbyggeri's Ungdomsklubber | 1550 København | 1995 |