| Kristelig Gymnasium AS | Education | 2021 |
| Kristensen & Nilsson Eiendom AS | Real estate | 2015 |
| Kristensen Consulting AS | Professional & scientific | 2020 |
| Kristensen Dalan Advokatfirma Da | Professional & scientific | 2000 |
| Kristensen Investering AS | | 2026 |
| Kristensen Kapital AS | Arts & recreation | 2025 |
| Krister Holding AS | Financial services | 2018 |
| Kristi Smør AS | Arts & recreation | 2011 |
| Kristian August-Kvartalet Drift AS | Real estate | 1990 |
| Kristian Augusts Gate 11 AS | Real estate | 2025 |
| Kristian Augusts Gate 13 AS | Real estate | 2016 |
| Kristian Augustsgate 13 Business Centre AS | Real estate | 2018 |
| Kristian Bogneruds Vei 37 AS | Real estate | 2015 |
| Kristian Brovold AS | Real estate | 2017 |
| Kristian Fauske Consulting AS | Professional & scientific | 2022 |
| Kristian Gerhard Jebsen Group Limited Nuf | Transport & logistics | 2010 |
| Kristian H Larsen AS | Construction | 2014 |
| Kristian Hauge AS | Professional & scientific | 1996 |
| Kristian Hauge Boligeiendom AS | Real estate | 2014 |
| Kristian Hauge Eiendom AS | Real estate | 2011 |
| Kristian Hauge Holding AS | Professional & scientific | 2019 |
| Kristian Hjelle AS | Information & communication | 2016 |
| Kristian Hjellset AS | | 2023 |
| Kristian Hovelsrud AS | Wholesale & retail | 2020 |
| Kristian Ribe AS | Real estate | 2016 |
| Kristian Romsøe AS | Professional & scientific | 2011 |
| Kristian Røraas AS | Real estate | 2018 |
| Kristian Steensgaard Rørtekniske AS | Construction | 2017 |
| Kristian Ulriksen AS | Education | 2009 |
| Kristiana AS | Real estate | 2006 |
| Kristiane Jenssen Holding AS | | 2022 |
| Kristiania Blikkenslageri Ans | | 1989 |
| Kristiania Bulkcarriers AS | Transport & logistics | 2001 |
| Kristiania Bulkcarriers Inc | Transport & logistics | 1998 |
| Kristiania Byplankontor AS | Professional & scientific | 2018 |
| Kristiania Farvehandel AS | Construction | 2025 |
| Kristiania Gourmet AS | Wholesale & retail | 1993 |
| Kristiania Kunst & Metalstøberi AS | Manufacturing | 2001 |
| Kristiania Næringseiendom AS | Real estate | 2012 |
| Kristiania Renhold AS | Administrative & support | 1997 |
| Kristiania Student Equity Fund AS | | 2024 |
| Kristiania Verksted AS | Manufacturing | 2021 |
| Kristiania Visergutkontor AS | Transport & logistics | 1986 |
| Kristianiasvingen 64 AS | Real estate | 2025 |
| Kristianiasvingen AS | Real estate | 2005 |
| Kristianro AS | Real estate | 1997 |
| Kristiansand Dampskipsselskap Ans | Transport & logistics | 2000 |
| Kristiansand Eiendomsinvest AS | Real estate | 2021 |
| Kristiansand Hotellbygg AS | Real estate | 2017 |
| Kristiansand Kino Eiendom AS | Information & communication | 2001 |
| Kristiansand Kontorinvest AS | | 2025 |
| Kristiansand Line AS | Transport & logistics | 2005 |
| Kristiansand Logistikkinvest AS | Real estate | 2020 |
| Kristiansand Offentlig Eiendom AS | Real estate | 2020 |
| Kristiansand Sentrumseiendom AS | Real estate | 2024 |
| Kristiansands Gate 2 AS | Real estate | 2021 |
| Kristiansen Transportmegling AS | Transport & logistics | 2003 |
| Kristiansens Antikvariat SA | Wholesale & retail | 2016 |
| Kristiansteen Import AS | Wholesale & retail | 2016 |
| Kristiansund Eiendomsinvest AS | Real estate | 2018 |
| Kristiansund Etatbygg AS | Real estate | 2017 |
| Kristiansund Handelseiendom AS | Real estate | 2012 |
| Kristin Bevreng Invest AS | Real estate | 2000 |
| Kristin Gulbrandsrød AS | Financial services | 2005 |
| Kristin Haarseth AS | Real estate | 2005 |
| Kristin Heiberg AS | Financial services | 2014 |
| Kristin Jarmund Holding AS | | 2014 |
| Kristin Lund AS | Real estate | 2007 |
| Kristin Markussen Invest AS | Financial services | 2001 |
| Kristina Farstad Bjerkek AS | Professional & scientific | 2017 |
| Kristina Glastad AS | | 2019 |
| Kristina Holding AS | | 2025 |
| Kristine Eikenes AS | | 2021 |
| Kristine Green Sandvik, Manuellterapeut Og Idrettsfysioterapeut AS | Health & social care | 2019 |
| Kristine Holding AS | Financial services | 2017 |
| Kristine Holen AS | Financial services | 2018 |
| Kristine Johanne Holding AS | Real estate | 2019 |
| Kristine Kjeldsberg Invest AS | | 2020 |
| Kristine Meek AS | | 2022 |
| Kristine S-G Holding AS | | 2023 |
| Kristine Solhaug AS | Professional & scientific | 2021 |
| Kristine Volckmar AS | Education | 2016 |
| Kristinelundveien 14B AS | Construction | 2021 |
| Kristins Brudesalong AS | Wholesale & retail | 2000 |
| Kristmas AS | Financial services | 2016 |
| Kristo AS | Financial services | 2005 |
| Kristoffer Lervik Holding AS | | 2024 |
| Kristoffer Lofnes AS | Other services | 2025 |
| Kristoffer Robins Vei 13 AS | Real estate | 2014 |
| Kristoffer Robinsvei 13 Seksjon 12 AS | Real estate | 2023 |
| Kristoffer Robinsvei 2 B AS | Real estate | 1984 |
| Kristoffer Rui AS | Information & communication | 2023 |
| Kristoffer Skaret Holding AS | | 2022 |
| Kristoffer Wøien AS | Arts & recreation | 2026 |
| Kristoffersen & Berg AS | Professional & scientific | 1984 |
| Kristorn Holding AS | Information & communication | 2021 |
| Kriswil AS | Financial services | 2013 |
| Kritami AS | Real estate | 2005 |
| Kritec Consulting AS | Professional & scientific | 2005 |
| Kriterium AS | Arts & recreation | 2026 |