| Investeringselskapet Sten for Sten AS | Real estate | 2003 |
| Investeringsfondet Viking AS | Financial services | 2019 |
| Investeringsgruppen AS | Real estate | 2019 |
| Investeringsselskapet Hafrsfjord AS | Financial services | 2010 |
| Investeringsselskapet Optimum AS | Real estate | 1995 |
| Investfjorddalen Kapital AS | | 2026 |
| Investhon AS | Hospitality | 1900 |
| Investhor AS | | 2022 |
| Investhors AS | | 2025 |
| Investhuse AS | | 2015 |
| Investic AS | Professional & scientific | 1996 |
| Investica AS | | 2022 |
| Investilje Holding AS | | 2025 |
| Investimax AS | Financial services | 2015 |
| Investin AS | | 2017 |
| Investini AS | | 2023 |
| Investire AS | Real estate | 2007 |
| Investire Eiendom AS | Real estate | 1982 |
| Investire Invest AS | Real estate | 1998 |
| Investisol AS | Real estate | 2015 |
| Investit Holdco AS | Information & communication | 2022 |
| Investit Midco AS | Information & communication | 2022 |
| Investiture AS | Information & communication | 2026 |
| Investmaer AS | Real estate | 2012 |
| Investment Du Nord AS | Administrative & support | 1987 |
| Investobois AS | Financial services | 2024 |
| Investor 1 AS | Financial services | 2010 |
| Investor 2 AS | Financial services | 2010 |
| Investor 3 AS | Financial services | 2010 |
| Investor 52 AS | | 1992 |
| Investor AS | Manufacturing | 1990 |
| Investor Corporate AS | Professional & scientific | 2000 |
| INVESTOR365 AS | Real estate | 2023 |
| Investorna AS | | 2022 |
| Investorprosjekt 259 AS | Transport & logistics | 2015 |
| Investorprosjekt 323 AS | Financial services | 2017 |
| Investorprosjekt 337 AS | Real estate | 2018 |
| Investorprosjekt 379 AS | | 2021 |
| Investorprosjekt 412 AS | | 2022 |
| Investorprosjekt 423 AS | Transport & logistics | 2022 |
| Investorprosjekt 445 AS | Real estate | 2024 |
| Investorprosjekt 455 AS | | 2024 |
| Investorprosjekt 456 AS | Administrative & support | 2024 |
| Investorprosjekt 457 AS | | 2024 |
| Investorprosjekt 462 AS | Transport & logistics | 2024 |
| Investorprosjekt 466 AS | Transport & logistics | 2025 |
| Investorprosjekt 472 AS | Transport & logistics | 2025 |
| Investorprosjekt 473 AS | Transport & logistics | 2025 |
| Investorprosjekt 474 AS | Transport & logistics | 2025 |
| Investorprosjekt 482 AS | Real estate | 2025 |
| Investorprosjekt 486 AS | Real estate | 2026 |
| Investorprosjekt 487 AS | Real estate | 2026 |
| Investorprosjekt 488 AS | Real estate | 2026 |
| Investorprosjekt 489 AS | Real estate | 2026 |
| Investorprosjekt 490 AS | Real estate | 2026 |
| Investorprosjekt 491 AS | Real estate | 2026 |
| Investorprosjekt 492 AS | Real estate | 2026 |
| Investorprosjekt 493 AS | Real estate | 2026 |
| Investorprosjekt 494 AS | Real estate | 2026 |
| Investorprosjekt 495 AS | Real estate | 2026 |
| Investorprosjekt 496 AS | Transport & logistics | 2026 |
| Investorprosjekt 497 AS | Transport & logistics | 2026 |
| Investorprosjekt 498 AS | Transport & logistics | 2026 |
| Investorprosjekt 499 AS | Transport & logistics | 2026 |
| Investorprosjekt 500 AS | Transport & logistics | 2026 |
| Investorprosjekt 501 AS | Transport & logistics | 2026 |
| Investorprosjekt 505 AS | Transport & logistics | 2026 |
| Investorprosjekt 506 AS | Transport & logistics | 2026 |
| Investorprosjekt 508 AS | Transport & logistics | 2026 |
| Investorprosjekt 509 AS | Transport & logistics | 2026 |
| Investorprosjekt 510 AS | Transport & logistics | 2026 |
| Investorprosjekt 513 AS | Transport & logistics | 2026 |
| Investorprosjekt 514 AS | Transport & logistics | 2026 |
| Investorprosjekt 515 AS | Transport & logistics | 2026 |
| Investorprosjekt 516 AS | Transport & logistics | 2026 |
| Investorprosjekt 517 AS | Transport & logistics | 2026 |
| Investorprosjekt 518 AS | Transport & logistics | 2026 |
| Investorprosjekt 519 AS | Transport & logistics | 2026 |
| Investorprosjekt 520 AS | Transport & logistics | 2026 |
| Investra AS | Real estate | 1994 |
| Investrian AS | Financial services | 2015 |
| Investronics AS | Professional & scientific | 1969 |
| Investum AS | Financial services | 2021 |
| Investus AS | Real estate | 2021 |
| Investvind AS | | 2021 |
| Investy AS | | 2023 |
| Invex AS | Real estate | 1997 |
| Invex Eiendomsutvikling AS | Real estate | 2020 |
| Invex Group AS | Real estate | 2005 |
| Invex Management AS | Professional & scientific | 2007 |
| Invex Utleie AS | | 2023 |
| Invisu AS | Wholesale & retail | 2008 |
| Invito Inspire AS | Professional & scientific | 1997 |
| Invito Invest AS | Financial services | 2012 |
| Invitrodia AS | Real estate | 2012 |
| Invivo Bionics AS | Professional & scientific | 2018 |
| Involve Design AS | Professional & scientific | 2025 |
| Involve! Advertising AS | Professional & scientific | 1982 |
| Involve! Holding AS | Professional & scientific | 2011 |
| Involve! PR AS | Professional & scientific | 2007 |