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| Im Solutions GmbH | De-89077 Ulm | 2020 |
| Im Tech Co., Ltd. | Kr-Gyeongsangnam-Do 53289 | 2020 |
| Ima Schelling Austria GmbH Nuf | Oslo | 2025 |
| Ima Schelling Deutschland GmbH Nuf | Oslo | 2025 |
| Imagemen Ans | Bø I Telemark | 2000 |
| Imazu AS | Oppdal | 2006 |
| Imb Service AS | Seljord | 2012 |
| Imcoteq | 7471Ca Goor | 2024 |
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| Imenco Invest AS | Aksdal | 2001 |
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| Imo Bruk AS | Kodal | 2015 |
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| Impec AS | Øvre Årdal | 2004 |
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| Impuls Teknisk AS | Tromsø | 2026 |
| Imres Granola AS | Oppegård | 2023 |
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| Ims Maskinering AS | Akland | 2002 |
| Ims Technologies AS | Akland | 2013 |
| Ims Vea AS | Åkrehamn | 2023 |
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| Imtas AS | Mo I Rana | 2021 |
| Imtas Harstad AS | Harstad | 2024 |
| Imtas Prosjekt AS | Mo I Rana | 2004 |
| Imtradex | Cz-68751 Nivnice | 2023 |
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| Ina Skiebe Grafisk AS | Brevik | 2020 |
| Inaventa Solar AS | Billingstad | 2019 |
| Incendium AB Nuf | 442 40 Kungälv | 2015 |
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| Incobra S.R.L. Nuf | It-35131 Padova | 2024 |
| Incoterms Bøker AS | Oslo | 1999 |
| Indergård Invest AS | Leinstrand | 2005 |
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| Inderøy Gårdsbryggeri AS | Inderøy | 2012 |
| Inderøy Kaffebrenneri AS | Inderøy | 2024 |
| Inderøy Mosteri AS | Inderøy | 2019 |
| Inderøy Slakteri AS | Inderøy | 2001 |
| Inderøykarve SA | Inderøy | 1994 |
| Index-Werke GmbH & Co. KG | De-73730 Esslingen Am Neckarn | 2017 |
| Indian Gourmet AS | Kristiansand S | 2019 |
| Indra Navia AS | Asker | 1918 |
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| Indre Troms Invest AS | Tromsø | 2020 |
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| Indu Work D.O.O Nuf | Hr-35000 Slavonski Brod | 2025 |
| Inducon AS | Kvaløya | 2025 |
| Induction Holding AS | Skien | 2021 |
| Induflex Sondermaschinenbau GmbH | De-27337 Blender | 2026 |
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| Indumont AB | Se-943 36 Öjebyn | 2002 |
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| Industri & Skogservice AS | Larvik | 2023 |
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| Industri Allianse AS | Skogsvåg | 2020 |
| Industri Og Landbruksservice AS | Åseral | 2016 |
| Industri Og Maritim Service AS | Stavanger | 2006 |
| Industri Og Maskin Service AS | Vikersund | 2005 |
| Industri Reperatøren AS | Avaldsnes | 2022 |
| Industri Service Nord AS | Tverrelvdalen | 2020 |
| Industri-Invest AS | Sola | 2007 |
| Industri-Support AS | Larvik | 2006 |
| Industri-Teknik Bengt Fridh AB Nuf | 232 37 Arlöv | 2020 |
| Industrial Furnaces Insertec | Es-48970 Basauri Bizkaia | 2023 |
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| Industrikorrosjon AS | Kopervik | 2021 |
| Industrikran Holding AS | Fornebu | 2022 |
| Industrikran Norge AS | Sandnes | 1988 |
| Industrilakkering AS | Åros | 2018 |
| Industrimek AS | Myre | 2013 |
| Industrimekaniker Lønseth AS | Molde | 2020 |
| Industrimontage Nuf | 9900 Fredrikshavn | 2018 |
| Industrimontage Øland AS | Hvittingfoss | 2021 |
| Industrimontasje AS | Harstad | 2010 |
| Industriparken AS | Trondheim | 2023 |
| Industripartnerne AS | Stavanger | 2025 |
| Industripartnerne Drift AS | Stavanger | 2026 |
| Industriplast AS | Follese | 2022 |
| Industriplast Holding AS | Follese | 2019 |
| Industrireparationer Sverige AB | Se-511 94 Älekulla | 2020 |
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| Industriservice Sør AS | Kristiansand S | 2019 |
| Industriskinn AS | Trysil | 2013 |
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| Industrisøm AS | Arendal | 1986 |