| Hus Og Folk AS | Health & social care | 2019 |
| Hymek Eiendom AS | Real estate | 2012 |
| Hype City Music AS | Information & communication | 2017 |
| Hådyr AS | | 2020 |
| Håkon Øglend AS | | 2018 |
| Håndverkshuset Egersund AS | Real estate | 2006 |
| Hårgalleriet Pedersen AS | Other services | 2004 |
| Hårstua Egersund AS | Other services | 2022 |
| Høgevollen Invest AS | | 2025 |
| Høien Rental AS | Administrative & support | 2024 |
| Høien Trafikkskole AS | Education | 1981 |
| Høien-Holding AS | Real estate | 2024 |
| Høljebakkan 1 AS | Real estate | 2010 |
| Høydearbeid AS | Construction | 2023 |
| Ideko Holding AS | Manufacturing | 2008 |
| Iko AS | Financial services | 2005 |
| Il Gelato AS | Manufacturing | 2018 |
| Impeks Ans | Wholesale & retail | 1997 |
| Industri Elektro AS | Construction | 2018 |
| Inemarieq AS | | 2026 |
| Inexo AS | Professional & scientific | 2023 |
| Ing Firma Jarle E R Skadberg AS | Professional & scientific | 1999 |
| Innowise Ventures AS | | 2022 |
| Interiørassistanse Kvassheim Og Hagen Ans | Professional & scientific | 1995 |
| International Centre for Edtech Impact AS | Education | 2018 |
| Iostudiotech AS | Professional & scientific | 2010 |
| Irene Grastveit Holding AS | Professional & scientific | 2007 |
| Isene Rådgivning AS | Other services | 2020 |
| Isoteks Miljø Sør AS | Construction | 2019 |
| Istanbull Kebabbar Ans | Hospitality | 1991 |
| Isynergi AS | Professional & scientific | 2026 |
| Itlock AS | Wholesale & retail | 2026 |
| Ivan Ulsund AS | | 2018 |
| J & K Søyland Da | Agriculture & fishing | 2024 |
| J Binvest AS | Professional & scientific | 2005 |
| J Roaldsen Invest AS | | 2020 |
| J&R Holding AS | Real estate | 2014 |
| J. Klausen Holding AS | | 2021 |
| Jahn Birger Invest AS | Real estate | 2005 |
| Jamla AS | Wholesale & retail | 2024 |
| Janex AS | Wholesale & retail | 1992 |
| Japera Invest AS | Real estate | 2016 |
| JB Finans AS | Real estate | 2016 |
| Jensen Investeringsselskap AS | Hospitality | 2005 |
| Jensine AS | Financial services | 2005 |
| Jernbaneveien Holding AS | Financial services | 2005 |
| JMH Invest AS | Financial services | 2005 |
| Joak AS | Hospitality | 2024 |
| Jonas AS | Financial services | 2005 |
| Jostein Ege AS | Construction | 2013 |
| JS Process Teknikk AS | Professional & scientific | 2022 |
| JV Stangeland - B&G Tunnel Ans | Construction | 2022 |
| Jærveien 193 AS | Real estate | 2016 |
| K. Angell Agency AS | Professional & scientific | 2023 |
| K. B. Drift AS | Wholesale & retail | 2021 |
| K. Mong AS | | 2020 |
| K. Skadberg AS | Construction | 2023 |
| K.A.J Holding AS | Financial services | 2012 |
| K.B. Holding AS | Wholesale & retail | 2021 |
| K2H Eiendom AS | Real estate | 2019 |
| Kalah AS | Agriculture & fishing | 2011 |
| Kaupanes Hydrogen AS | Manufacturing | 2023 |
| Ketari Invest AS | | 2020 |
| Kevte Invest AS | | 2021 |
| Kielland Eiendom AS | Real estate | 1995 |
| Kiellandskogen Fus Barnehage AS | Education | 2018 |
| Killingstone AS | Financial services | 2023 |
| Kiwano Invest AS | | 2020 |
| Kjellandsveien 44 AS | Real estate | 2015 |
| KJK Høien Eiendom AS | Real estate | 2024 |
| Kjøkkensenteret Egersund AS | Wholesale & retail | 2006 |
| Kjølebrønn Holding AS | | 2018 |
| Kleppa Samdrift Da | Agriculture & fishing | 2003 |
| Klungland Holding AS | Construction | 2022 |
| KMW AS | | 2022 |
| KNERTEN Tone Stokkeland Wenche Jorunn Landmark | Wholesale & retail | 1986 |
| Knutaveien Invest AS | | 2025 |
| Kodlidalen Utleie 2 AS | Real estate | 2026 |
| Kodlidalen Utleie AS | Real estate | 2024 |
| Kongshauen Holding AS | Real estate | 2018 |
| Kontrari AS | Financial services | 2025 |
| Kontrari Eiendom AS | Real estate | 1995 |
| Kontrari Fjord Line Holding AS | | 2023 |
| Kontrazi AS | Real estate | 2022 |
| Kornelius Roaldsen Fiskebåtrederi AS | Agriculture & fishing | 1989 |
| Kraftscada AS | Professional & scientific | 2023 |
| Kranbilen AS | Transport & logistics | 2022 |
| Kristen Holand Holding AS | Construction | 2013 |
| Kristian Fuglseth Holding AS | Financial services | 2005 |
| Kristiansands Auto AS | Real estate | 2016 |
| Kristine AS | | 2020 |
| Kristine Sofie AS | Real estate | 2005 |
| Kråkefjellet AS | Financial services | 2008 |
| Kvaløy Reketråling AS | Agriculture & fishing | 2025 |
| Kvassheim Eiendom AS | Real estate | 2022 |
| Kvassheims Elektriske Forretning AS | Construction | 1982 |
| Kvelluren Holding AS | Real estate | 2016 |
| Kvellurveien 26 AS | Real estate | 2026 |
| Kviksvik AS | Real estate | 2005 |
| Kystbygg AS | Construction | 2000 |