| Ikya Academy AS | Oslo | 2016 |
| Ikya AS | Oslo | 2020 |
| Ila Trafikkskole AS | Trondheim | 2013 |
| Ild Norge AS | Kodal | 2026 |
| Ilico AS | Oslo | 2018 |
| Illuminating Concepts AS | Haugesund | 2018 |
| Ilsøy Invest AS | Dagali | 2011 |
| Iluminheart Community AS | Setskog | 2026 |
| Im Berg AS | Sandnes | 2023 |
| Im Ressurs AS | Sandefjord | 2007 |
| Imellom AS | Levanger | 2019 |
| Imh Mentoring AS | Namsos | 2025 |
| Imi Åpen Barnehage AS | Stavanger | 2005 |
| Imisu AS | Trondheim | 2006 |
| Imoff AS | Bergen | 2021 |
| Imotion AS | Sandnes | 2021 |
| Impact Dynamics AS | Lillestrøm | 2024 |
| Impact Lab AS | Stavanger | 2020 |
| Improbus AS | Fyllingsdalen | 2013 |
| Improved Skills Ltd Nuf | Hobøl | 2022 |
| Impulz Personlig Trening AS | Tananger | 2013 |
| In-Spirer Da | Oslo | 2007 |
| Ina Moor AS | Finnsnes | 2022 |
| Ina Moor Holding AS | Finnsnes | 2024 |
| Inbalance AS | Fredrikstad | 2018 |
| Inciderm AS | Lillestrøm | 2025 |
| Incline Coaching AS | Molde | 2025 |
| Inconnect AS | Hakadal | 2023 |
| Incrementum Group AS | Oslo | 2024 |
| Indoor Golf AS | Røyse | 2022 |
| Indre Namdal Montessoriskole SA | Trones | 2013 |
| Indre Salten Opplæringskontor AS | Fauske | 1996 |
| Indreleder AS | Fåvang | 2020 |
| Industri- & Sikkerhetsskolen AS | Porsgrunn | 2019 |
| Industriakademiet AS | Tananger | 2014 |
| Industriens Kompetansefond AS | Oslo | 2025 |
| Industriguide AS | Stavanger | 2012 |
| Industrikurs AS | Drammen | 2005 |
| Industriopplæring Og Sertifisering AS | Kolbjørnsvik | 2026 |
| Industriveien Eiendom BHG AS | Hagan | 2007 |
| Industriveien Fus Barnehage AS | Hagan | 2018 |
| Inesplo AS | Nittedal | 2022 |
| Infinitas Educating for the Future AS | Oslo | 2006 |
| Infinite Vision AS | Tjodalyng | 2020 |
| Infinitum Holding AS | Sandnes | 2016 |
| Infinity Yogi AS | Hamar | 2020 |
| Informa Connect Limited | London Sw1P 1Wg England | 2009 |
| Inga Sandve Musikk AS | Oslo | 2015 |
| Inge Mannsåker Trafikkskole AS | Evenskjer | 2016 |
| Ingefær AS | Nesoddtangen | 2016 |
| Ingrain AS | Drammen | 2015 |
| Ingrid Nedrebo Coaching AS | Østerås | 2022 |
| Ingrid Selmer AS | Stavanger | 2016 |
| Ingvild Stene AS | Skjeberg | 2024 |
| Ingvildsbarnehage Bestumveien AS | Oslo | 2023 |
| Ingvildsbarnehage Holgerslystveien AS | Oslo | 2023 |
| Initia AS | Oslo | 2005 |
| Iniva Academy AS | Oslo | 2026 |
| Inkluderingsagentene SA | Oslo | 2024 |
| Inlearn Norway AS | Oslo | 2020 |
| Inman Aligner Training Limited | London W1U 6Bp | 2014 |
| Inmotion Living AS | Sarpsborg | 2025 |
| Inner Glow AS | Oslo | 2019 |
| Innfjorden Barnehage SA | Innfjorden | 2014 |
| Innfjorden Friskole SA | Innfjorden | 2010 |
| Innherred Førstehjelp Da | Steinkjer | 2015 |
| Innherred Trafikkskole AS | Verdal | 2024 |
| Innlandet Hundetjenester AS | Fagerstrand | 2018 |
| Innlandet Kompetanse AS | Otta | 2019 |
| Innlandet Kompetansesenter AS | Stavsjø | 2018 |
| Innleggen Holding AS | Bø I Telemark | 2017 |
| Innospire AS | Oslo | 2021 |
| Innovasjonstolk AS | Ålesund | 2025 |
| Innpact AS | Oslo | 2025 |
| Innveier AS | Skien | 2025 |
| Inovera AS | Mo I Rana | 2015 |
| Insamlingsstiftelsen Choice | 114 51 Stockholm | 2017 |
| Insert AS | Kristiansand S | 2023 |
| Insert Theme AS | Ask | 2021 |
| Insiros AS | Drammen | 2026 |
| Insperi AS | Kristiansand S | 2016 |
| Inspira AS | Namsos | 2015 |
| Inspira Invest AS | Glesvær | 2020 |
| Inspira Invest Eiendom AS | Glesvær | 2021 |
| Inspira Living AS | Straume | 2014 |
| Inspirals AS | Oslo | 2019 |
| Inspire & Impact AS | Oslo | 2023 |
| Inspire Yogastudio AS | Tromsø | 2014 |
| Inspirerende Kurs AS | Mandal | 2025 |
| Inspirertos AS | Noresund | 2020 |
| Inspiron AS | Uvdal | 2013 |
| Inspo Studio AS | Sandvika | 2017 |
| Insta Trafikkskole AS | Skjetten | 2023 |
| Instant Kurs AS | Sofiemyr | 2022 |
| Institute for Learning Organizations AS | Porsgrunn | 1999 |
| Institutt for Dynamisk Pedagogikk Da | Bergen | 1992 |
| Institutt for Helhetsmedisin AS | Oslo | 2004 |
| Institutt for Holistisk Medisin & Meditasjon AS | Oslo | 2023 |
| Institutt for Kommunikasjon Om Helsen AS | Rennebu | 2018 |
| Institutt for Korttidsterapi AS | Kleive | 2023 |