| Kirkegata 4 AS | Real estate | 2014 |
| Kirkegata 45 Lillehammer AS | Real estate | 2013 |
| Kirkegata 77 Lillehammer AS | Real estate | 2005 |
| Kirkegaten 12 Holding AS | | 2024 |
| Kirkegaten 12 Næring AS | Real estate | 2024 |
| Kirkegaten 15 Da | Real estate | 1990 |
| Kirkegaten 183 AS | Real estate | 2022 |
| Kirkegaten 2 Oslo AS | Real estate | 2020 |
| Kirkegaten 22 Invest AS | Real estate | 2014 |
| Kirkegaten 24-26 AS | Real estate | 2002 |
| Kirkegaten 5 AS | Real estate | 2006 |
| Kirkegårdsgata 1 Eiendom AS | Real estate | 2017 |
| Kirkegårdsgata 13 AS | Real estate | 2023 |
| Kirkegårdsgata 7 AS | Real estate | 2023 |
| Kirkegårdsgata 8 AS | Real estate | 2025 |
| Kirkegårdsveien 45 AS | Real estate | 2013 |
| Kirkehaugsveien 4 AS | Real estate | 2017 |
| Kirkehaugsveien 9 AS | Real estate | 2022 |
| Kirkelig Kulturverksted AS | Information & communication | 1990 |
| Kirkenes Norhavn AS | Construction | 2015 |
| Kirkenes Samfunnsbygg AS | Real estate | 2022 |
| Kirkenes Turisthotell I AS | Real estate | 2016 |
| Kirkeorgel Strandskogen AS | Wholesale & retail | 2018 |
| Kirkeparken Kantine Ngo AS | Hospitality | 2015 |
| Kirkepartner AS | Information & communication | 2013 |
| Kirkeristen Sko AS | Wholesale & retail | 1971 |
| Kirkerud Glass-Service AS | Construction | 1977 |
| Kirkestuen AS | Construction | 2016 |
| Kirkestuen Bilservice AS | Other services | 2024 |
| Kirkestuen Holding AS | Construction | 2019 |
| Kirkestuen Invest AS | Financial services | 2005 |
| Kirkeveien 106 AS | Real estate | 1938 |
| Kirkeveien 114 AS | | 2023 |
| Kirkeveien 159 AS | Real estate | 2008 |
| Kirkeveien 166 AS | Real estate | 2024 |
| Kirkeveien 226 AS | Real estate | 2005 |
| Kirkeveien 43-45 Hjemmel AS | | 2025 |
| Kirkeveien 43-45 Holding AS | Real estate | 2025 |
| Kirkeveien 43-45 Næring AS | Real estate | 2025 |
| Kirkeveien 51 AS | Real estate | 2019 |
| Kirkeveien 51 Pizza AS | Hospitality | 2023 |
| Kirkeveien 540 AS | Real estate | 1999 |
| Kirkeveien 59 KS | Real estate | 1984 |
| Kirkeveien 60 AS | Real estate | 2008 |
| Kirkeveien 61 AS | Real estate | 2016 |
| Kirkeveien 7 Holding AS | Real estate | 2005 |
| Kirkeveien 71 F AS | Real estate | 2005 |
| Kirkeveien AS | Real estate | 2019 |
| Kirkeveien Dagligvare AS | Wholesale & retail | 2026 |
| Kirkeveien Næring AS | | 2022 |
| Kirkeveien Panorama AS | Real estate | 2021 |
| Kirkeveien Utbyggingsselskap AS | Real estate | 1996 |
| Kirkevold Kontorutstyr AS | Wholesale & retail | 1964 |
| Kirkevoll Invest AS | | 2023 |
| Kirkholm Holding AS | Administrative & support | 2012 |
| Kirkholm Invest AS | | 2025 |
| Kirkuk Dagligvare AS | Wholesale & retail | 2023 |
| Kirkwood Mohn Holding AS | | 2025 |
| Kirkøy Eiendom AS | Real estate | 2007 |
| Kirma AS | | 2021 |
| Kiropraktor Amundsen AS | Health & social care | 2022 |
| Kiropraktor Espen Holth AS | Health & social care | 2019 |
| Kiropraktor Helene Mejdell AS | Health & social care | 2021 |
| Kiropraktor Jacob Stang AS | Health & social care | 2025 |
| Kiropraktor Leif Gustav Pedersen AS | Health & social care | 2016 |
| Kiropraktorgruppen Stovner AS | Health & social care | 2014 |
| Kiropraktorthea AS | Health & social care | 2025 |
| Kiropro AS | Health & social care | 2002 |
| Kirper AS | Professional & scientific | 2020 |
| Kirsebom & Hurum AS | Wholesale & retail | 1994 |
| Kirsjo AS | Professional & scientific | 2021 |
| Kirsti Eidsvik Holding AS | | 2025 |
| Kirsti Hansen Holding AS | | 2024 |
| Kirsti.Music AS | Arts & recreation | 2021 |
| Kirsu AS | | 2021 |
| Kirti AS | Transport & logistics | 2024 |
| Kirurgiklinikken AS | Health & social care | 2010 |
| Kirurgisk Spesialistpraksis AS | Health & social care | 2001 |
| Kirush Eiendom AS | Real estate | 2026 |
| Kirvoco Ans | Real estate | 1991 |
| Kisoomi AS | Professional & scientific | 2020 |
| Kisosima AS | Manufacturing | 2024 |
| Kiss & Fly AS | Transport & logistics | 2015 |
| Kissa Pizza AS | Hospitality | 2026 |
| Kisse Holding AS | | 2022 |
| Kistebunn AS | Real estate | 2001 |
| Kistebunnen Holding AS | | 2025 |
| Kistefos AS | Transport & logistics | 1989 |
| Kistefos Corporate AS | Transport & logistics | 2016 |
| Kistefos Eiendom AS | Real estate | 1987 |
| Kistefos Equity Holding AS | Transport & logistics | 2007 |
| Kistefos Equity Holdings AS | Transport & logistics | 2014 |
| Kistefos Financial Advisors AS | Professional & scientific | 2022 |
| Kistefos International Investments AS | Transport & logistics | 2016 |
| Kistefos Investment AS | Real estate | 1999 |
| Kistefos Newco 6 AS | Information & communication | 2019 |
| Kistefos Newco 7 AS | | 2026 |
| Kistefos Offshore Services AS | | 2026 |
| Kistefos Skog AS | Manufacturing | 2005 |
| Kistefos Venture Capital AS | Transport & logistics | 1996 |