| Grantpilot AS | Information & communication | 2026 |
| Graver'N AS | Construction | 2018 |
| Greenjoy AS | Wholesale & retail | 2025 |
| Grense-Ekspressen Ans | Transport & logistics | 1999 |
| Gullberget Invest AS | | 2021 |
| Gullfjerdingen Maskinlag SA | Agriculture & fishing | 2001 |
| Gullvikskjell Da | Agriculture & fishing | 1990 |
| H.Bye Holding AS | | 2024 |
| Hagaplassen AS | Professional & scientific | 2020 |
| Hammerberget Utvikling AS | Real estate | 2021 |
| Havfruene. AS | Manufacturing | 2005 |
| Hearthmere Holding AS | | 2026 |
| Heja AS | | 2023 |
| Heksagon Aktivitet AS | Education | 2024 |
| Hellan Melk Da | Agriculture & fishing | 2004 |
| Hellvik Hus Inderøy AS | Construction | 2015 |
| Hem Å Klø Da | Administrative & support | 2011 |
| Heno Maskin AS | Administrative & support | 2021 |
| Herk AS | Real estate | 2015 |
| Hhelgesen AS | | 2025 |
| Hjemmeassistenten Ans | Administrative & support | 2003 |
| Holand Invest AS | Real estate | 2005 |
| Holiday Eiendom AS | | 2006 |
| Hs/Sa AS | Professional & scientific | 2015 |
| Husby Horisont Holding AS | | 2025 |
| Husfrua AS | Hospitality | 2009 |
| Hylla Holding AS | Real estate | 2015 |
| Hylla Invest AS | | 2020 |
| Hølsætra Beitelag SA | Agriculture & fishing | 1988 |
| Høstland Auto AS | Other services | 2012 |
| Idk AS | | 2019 |
| Igausen Holding AS | | 2023 |
| Indahl Holding AS | | 2023 |
| Inderøy Biovarme AS | Energy | 2016 |
| Inderøy Brenneri AS | Manufacturing | 2017 |
| Inderøy Catering AS | Hospitality | 2017 |
| Inderøy Dyreklinikk AS | Professional & scientific | 1998 |
| Inderøy Forbruksforening SA | Wholesale & retail | 1870 |
| Inderøy Grunneierlag SA | Administrative & support | 1952 |
| Inderøy Gårdsbryggeri AS | Manufacturing | 2012 |
| Inderøy Helsehus AS | Real estate | 2010 |
| Inderøy Hest Og Fe Forsikring SA | Financial services | 2020 |
| Inderøy Hønseri AS | Agriculture & fishing | 2007 |
| Inderøy Kaffebrenneri AS | Manufacturing | 2024 |
| Inderøy Kulturhus AS | Real estate | 2016 |
| Inderøy Kunsttun AS | Wholesale & retail | 2026 |
| Inderøy Landhandleri AS | Wholesale & retail | 2013 |
| Inderøy Legesenter AS | Health & social care | 2012 |
| Inderøy Maskinlag SA | Agriculture & fishing | 2017 |
| Inderøy Mosteri AS | Manufacturing | 2019 |
| Inderøy Næringshage AS | Real estate | 2012 |
| Inderøy Presseservice Ans | Agriculture & fishing | 1995 |
| Inderøy Seterlag SA | Other services | 1960 |
| Inderøy Slakteri AS | Manufacturing | 2001 |
| Inderøy Sopp AS | Agriculture & fishing | 2014 |
| Inderøy Utbygging AS | Real estate | 2008 |
| Inderøy Utvikling SA | Professional & scientific | 2019 |
| Inderøykarve SA | Manufacturing | 1994 |
| Inderøymat AS | Professional & scientific | 2019 |
| Inderøyningen AS | Information & communication | 1992 |
| Innherred Anlegg Og Utemiljø AS | Administrative & support | 2023 |
| Innherred Boligutvikling AS | Real estate | 2019 |
| Innherred Hundepensjonat AS | Agriculture & fishing | 2012 |
| Innholdsmakeriet AS | Professional & scientific | 2025 |
| Irs Steinkjer AS | Professional & scientific | 1994 |
| Ivaro Holding AS | Financial services | 2023 |
| Jan's Pølsemakeri AS | Manufacturing | 2020 |
| JBM Holding AS | Administrative & support | 2011 |
| Jci AS | Financial services | 2005 |
| Je Gausen Holding AS | | 2023 |
| JH Bedriftsrådgivning AS | Professional & scientific | 2024 |
| Johan Sætran AS | Wholesale & retail | 2023 |
| Jule Industrier AS | Construction | 2017 |
| Jæktbyn AS | Real estate | 2000 |
| Jætåsen Bil AS | Other services | 2002 |
| Jætåsen Eiendom AS | Other services | 2013 |
| K Olsen Holding AS | | 2024 |
| Kalseth AS | Hospitality | 2015 |
| Kastvollen Rehabiliteringssenter AS | Health & social care | 2017 |
| Kefirdada Ans | Arts & recreation | 2002 |
| Ketil Sten AS | Health & social care | 2009 |
| Kimaal AS | | 2024 |
| Kisve Eiendom AS | Real estate | 2020 |
| Kisve Holding AS | Hospitality | 2017 |
| Kjell Ystgård AS | Professional & scientific | 2011 |
| Kjelvik Maskin AS | Construction | 2012 |
| Kjelvika Ans | Agriculture & fishing | 2018 |
| Kjerringa Me' Straumen AS | Wholesale & retail | 2019 |
| Kjetil Vang Holding AS | Real estate | 2017 |
| Kjøleteknikk Midt-Norge AS | Construction | 1998 |
| Klepp Nordre Ans | Agriculture & fishing | 2002 |
| Klepp Regnskap AS | Professional & scientific | 1998 |
| Kløvstad Invest AS | Real estate | 2007 |
| KM Hallem Holding AS | | 2024 |
| Kolekvinten AS | Wholesale & retail | 2016 |
| Kribelin Barnehage AS | Education | 2006 |
| Kriga AS | | 2023 |
| Kristian Breivik Holding AS | Financial services | 2015 |
| Kvam Øvre Invest AS | | 2008 |
| Kåve AS | Construction | 2012 |