| Kristiansand Bygg AS | Construction | 2009 |
| Kristiansand Bådsenter AS | Wholesale & retail | 2005 |
| Kristiansand Båt Og Motor AS | Manufacturing | 2011 |
| Kristiansand Båthuslag SA | | 1968 |
| Kristiansand Båtutstyr AS | Wholesale & retail | 2012 |
| Kristiansand Caravan Og Fritid AS | Wholesale & retail | 2026 |
| Kristiansand Damputstyr AS | Wholesale & retail | 2021 |
| Kristiansand Detalj AS | Wholesale & retail | 2022 |
| Kristiansand Dykkeservice AS | Construction | 2021 |
| Kristiansand Dyrepark AS | Arts & recreation | 1978 |
| Kristiansand Eiendom Holding AS | | 2025 |
| Kristiansand Eksport Import AS | Administrative & support | 2003 |
| Kristiansand Elektro AS | Construction | 1999 |
| Kristiansand Event AS | Administrative & support | 2014 |
| Kristiansand Fargehandel AS | Wholesale & retail | 2026 |
| Kristiansand Feriesenter Drift AS | Hospitality | 2012 |
| Kristiansand Flukt AS | Real estate | 1997 |
| Kristiansand Folkehøgskole AS | Education | 2014 |
| Kristiansand Forsikringssenter AS | Financial services | 2000 |
| Kristiansand Gjestehavndrift AS | Real estate | 2016 |
| Kristiansand Glass Og Fasade Da | Real estate | 2003 |
| Kristiansand Holding AS | Wholesale & retail | 2010 |
| Kristiansand Hotell AS | Real estate | 1998 |
| Kristiansand Hotelldrift AS | Hospitality | 2013 |
| Kristiansand Hudlegeklinikk AS | Health & social care | 2024 |
| Kristiansand Hundefrisør AS | Other services | 2017 |
| Kristiansand Hybelformidling Ans | Real estate | 1999 |
| Kristiansand Hydraulikk & Maskinering AS | Manufacturing | 2016 |
| Kristiansand Internasjonale Dragefestival AS | Arts & recreation | 2017 |
| Kristiansand Invest AS | | 2021 |
| Kristiansand Kampsport Lund AS | Arts & recreation | 2020 |
| Kristiansand Kino Holding AS | Information & communication | 2001 |
| Kristiansand Klatresenter AS | Arts & recreation | 2018 |
| Kristiansand Kongelige Teater AS | Arts & recreation | 2025 |
| Kristiansand Maler Youssef AS | Construction | 2025 |
| Kristiansand Markets AS | Wholesale & retail | 2025 |
| Kristiansand Møbler AS | Wholesale & retail | 2017 |
| Kristiansand Naturterapi AS | Health & social care | 2016 |
| Kristiansand Næringsselskap AS | Real estate | 1978 |
| Kristiansand Smådyrklinikk Lauvåsen AS | Professional & scientific | 2019 |
| Kristiansand Specsavers AS | Wholesale & retail | 2002 |
| Kristiansand Stillas AS | Construction | 2014 |
| Kristiansand Sykkelsenter AS | Wholesale & retail | 1990 |
| Kristiansand Tak Og Membran AS | Construction | 2021 |
| Kristiansand Taxi SA | Transport & logistics | 2008 |
| Kristiansand Teknologipark AS | Real estate | 2004 |
| Kristiansand Teknologipark II AS | Real estate | 2006 |
| Kristiansand Teknologipark Invest AS | Real estate | 2010 |
| Kristiansand Teknologipark Management AS | Hospitality | 2010 |
| Kristiansand Trafikkskole AS | Education | 2016 |
| Kristiansand Truckopplæring Ans | Education | 1993 |
| Kristiansand Ur Og Smykker AS | Wholesale & retail | 2013 |
| Kristiansand VVS AS | Construction | 2007 |
| Kristiansand Øre-Nese-Hals AS | Health & social care | 2001 |
| Kristiansen Og Nico Eiendom AS | Real estate | 2022 |
| Kristin AS | Other services | 2014 |
| Kristin Helena Yoga AS | Education | 2023 |
| Kristin Invest AS | | 2025 |
| Kristin Klæboe AS | Education | 2023 |
| Kristins Hudpleie & Massasje AS | Professional & scientific | 2017 |
| Kristoffer Halvorsen Management AS | Arts & recreation | 2016 |
| Krittveien 135 AS | Real estate | 2025 |
| Krittveien 135 AS | Real estate | 2025 |
| Krittveien 22 AS | Real estate | 2019 |
| Krittveien 37 AS | | 2025 |
| Krittveien 39 AS | | 2025 |
| Krittveien 51 Og 53 AS | Real estate | 2022 |
| Krittveien 55 Og 57 AS | Real estate | 2024 |
| Krittveien 67 AS | Real estate | 2022 |
| Krittveien 84 AS | Real estate | 2022 |
| Krittveien Seksjon 6 AS | Real estate | 2020 |
| Krivi Holding AS | | 2026 |
| KRL Eiendom AS | Construction | 2015 |
| KRL Venture AS | Wholesale & retail | 2020 |
| Krohn Investering AS | | 2022 |
| Krommenie AS | Real estate | 2001 |
| Kronprinsensgate 1 AS | Real estate | 2011 |
| Kroodden 41 AS | Real estate | 2025 |
| Kroodden AS | Professional & scientific | 2019 |
| Krossen Handel AS | Real estate | 2005 |
| Krossen Holding AS | Real estate | 2019 |
| KRS AS | Financial services | 2005 |
| KRS Avisen Kristiansand AS | Information & communication | 2021 |
| KRS Bolig AS | Real estate | 2025 |
| KRS Eiendom AS | Real estate | 2009 |
| KRS Flislegging Og Hudpleie AS | Construction | 2016 |
| KRS Helse AS | Health & social care | 2022 |
| KRS Live AS | Administrative & support | 2025 |
| KRS Revisjon AS | Professional & scientific | 2004 |
| KRS Shipping AS | Real estate | 2022 |
| KRS Sommerleiligheter Nuf | Real estate | 2005 |
| KRS Tak Eiendom AS | Real estate | 2022 |
| KRS Urban Dance Center AS | Education | 2021 |
| KRS Utvikling AS | Professional & scientific | 2024 |
| KRS VR Arena AS | Information & communication | 2025 |
| Krs.Catering AS | Hospitality | 2015 |
| KRS46STUDIOS AS | Information & communication | 2025 |
| Kruger Holdings AS | Wholesale & retail | 2019 |
| Krugmayer Invest AS | | 2025 |
| Krugmayer Legal AS | Professional & scientific | 2026 |