| Høland Transport AS | Løken | 2022 |
| Hølmo AS | Vågå | 1998 |
| Hønefoss Taxi SA | Hønefoss | 1998 |
| Hønefoss Transport AS | Hønefoss | 2020 |
| Høste Transport AS | Larvik | 2012 |
| Høvo AS | Tynset | 2020 |
| Høyergruppen AS | Skien | 2017 |
| Høyers Brøyting Og Utleie AS | Skjervøy | 2024 |
| Høysand Marine AS | Skjeberg | 2026 |
| Høyskel Holding AS | Oslo | 1960 |
| I & G Holding AS | Nesttun | 2015 |
| I Alfredsson Transport AB | Se-600 03 Norrkøping | 1996 |
| I Munoz Taxi AS | Rådal | 2026 |
| I. Digre Tømmertransport AS | Rognes | 2007 |
| I.A.Guttorm Transport AS | Tana | 2020 |
| I.H.J Eiendom AS | Hønefoss | 2012 |
| I.Solberg Holding AS | Leknes | 2023 |
| I/S Horsbøl & Hein | 7200 Grindsted | 2012 |
| Ian Invest AS | Kvelde | 2005 |
| Iberian Green Line AS | Fosnavåg | 2019 |
| Iboks Minilager AS | Heimdal | 2018 |
| IBOX1 AS | Kristiansand S | 2015 |
| Icb | Dk-9440 Aabybro | 2012 |
| Ice Liner Sebastian Krzyzaniak Nuf | Pl-99-100 Leczyca | 2026 |
| ICELANDAIR norsk avdeling av utenlandsk foretak | Oslo | 1995 |
| Iceworld Service AS | Oslo | 2025 |
| Icts Norway AS | Gardermoen | 2004 |
| Idar Karlsen Transport AS | Ankenes | 2008 |
| Ide Vest AS | Akkerhaugen | 2001 |
| Idl Handel AS | Oslo | 2024 |
| Ifchor Galbraiths Norway AS | Bergen | 2008 |
| Ifrakt AS | Rådal | 2022 |
| Iglebæk Og Øvland Transport AS | Øvrebø | 2006 |
| Iglo Mano AS | Eidsnes | 2008 |
| Ignition Aviation Limited | Swords, County Dublin | 2015 |
| Ikenga Services AS | Kløfta | 2026 |
| Ikss Transport AS | Hundvåg | 2013 |
| Ila Parkering AS | Tiller | 2014 |
| Ilaf AS | Oslo | 2026 |
| Ildfluen Transport AS | Oslo | 2026 |
| Ilsvikparken AS | Tiller | 2013 |
| Ilyas Tayyeb AS | Finstadjordet | 2023 |
| Ilyas Transport AS | Oslo | 2024 |
| Im Engros AS | Langhus | 2024 |
| Imaak AS | Sellebakk | 2023 |
| Imatong AS | Nesttun | 2016 |
| Immob Invest AS | Oslo | 2021 |
| Imo Logistics and Services Ans | Sandnes | 2013 |
| IMO-8505434 AS | Husøysund | 2021 |
| Impera Holding Invest AS | Fetsund | 2022 |
| Imperial Transport AS | Kolbotn | 2025 |
| Impruv Logistics AS | Langangen | 2025 |
| Imsk SE | Oslo | 1996 |
| In Excelsis AS | Oslo | 2019 |
| In Via Eiendom AS | Fauske | 2018 |
| Inan Muthisin Transport AS | Oslo | 2024 |
| Inchcape Shipping Government Services AS | Bergen | 2007 |
| Inchcape Shipping Services AS | Bergen | 2023 |
| Inchcape Terminal Holding AS | Bergen | 2023 |
| Inchcape Terminaler AS | Bergen | 2023 |
| Indahl Transport AS | Verdal | 2018 |
| Inderøy Taxi AS | Steinkjer | 2018 |
| Indigo Management AS | Lysaker | 2006 |
| Indiska Magasinet Aktiebolag | 102 54 Stockholm | 2004 |
| Indoro Transport AS | Tistedal | 2019 |
| Indre Agder Transport AS | Hornnes | 2004 |
| Indrefjorden Taxi AS | Matredal | 2025 |
| Indseth Transport AS | Ski | 1981 |
| Industrikaia AS | Lovund | 1997 |
| Inextenso AS | Oslo | 2016 |
| Infinity Ride AS | Oslo | 2025 |
| Infinity Shipbrokers AS | Oslo | 2025 |
| Infinity Transport & Spedition Töcksfors Sweden AB Nuf | Se-672 41 Töcksfors | 2025 |
| Infranordic Shipping & Forwarding AB | Se-414 51 Göteborg | 2015 |
| Ingar Gustavsen AS | Nærbø | 2007 |
| Ingar Iversen AS | Smøla | 1995 |
| Ingdal Transport AS | Børsa | 2009 |
| Inge Eiendom Og Utleie AS | Tana | 2007 |
| Inge S Transport AS | Nesttun | 2024 |
| Ingebrigtsen Multiservice AS | Stokmarknes | 2022 |
| Ingers Trans AS | Stranda | 2011 |
| Ingolf Thune AS | Bjerkvik | 1979 |
| Ingolv Moen Eftf AS | Vindøla | 2010 |
| Ingrid AS | Utsira | 1998 |
| Ingvars Reiser AS | Randaberg | 1996 |
| Inn Taxi AS | Tolvsrød | 2026 |
| Inndyr Taxi AS | Inndyr | 2025 |
| Innfrakt AS | Steinkjer | 2024 |
| Innherred Bilberging AS | Verdal | 2023 |
| Innherredsferja AS | Levanger | 1957 |
| Innlandet Betongpumping AS | Etnedal | 1995 |
| Innlandet Distribusjon - Lillehammer AS | Oslo | 1975 |
| Innlandet Distribusjon Gjøvik AS | Oslo | 1984 |
| Innlandet Distribusjon Hamar AS | Oslo | 1994 |
| Innlandet Drift AS | Vallset | 2026 |
| Innlandet Dyretransport AS | Lena | 2021 |
| Innlandet Gjenvinning & Transport AS | Fall | 2020 |
| Innlandet Maskintransport AS | Leira I Valdres | 2023 |
| Innlandet Transport AS | Skjåk | 2006 |
| Innlandet Transport Og Logistikk AS | Vinstra | 2021 |