| Honeyhouse AS | Wholesale & retail | 2026 |
| Hostvedt Sveis Og Reparasjon AS | Manufacturing | 2019 |
| HTC Eiendom Da | Real estate | 2009 |
| Huldraheimen Steinerbarnehage AS | Education | 2024 |
| Huldraheimen Steinerbarnehage II AS | Education | 2024 |
| Hvlp Spray Norge AS | Wholesale & retail | 2021 |
| Ilåven AS | Health & social care | 2018 |
| Industrio AS | | 2026 |
| Infoskjermer Norge AS | Information & communication | 2015 |
| Isd Productions Da | Information & communication | 2022 |
| Ivar O. Løver Eftf Da | Hospitality | 2023 |
| J & K Maskin AS | Construction | 2010 |
| Ja Holding AS | Real estate | 2004 |
| Jackson Constructions AS | Construction | 2021 |
| Jan Hvambsal AS | Construction | 1986 |
| Jarle Ekra Invest AS | Wholesale & retail | 2005 |
| Jesima Eiendom AS | Real estate | 2001 |
| Juj Holding AS | Construction | 2005 |
| Kajander Utleie AS | Administrative & support | 2023 |
| Kilkenny Norway Ans | Construction | 1994 |
| Kløvstad Vann Og Avløpslag SA | Water & waste | 2020 |
| Kløvstadhagen Finmekaniske AS | Other services | 2017 |
| KMT Insight AS | Professional & scientific | 2023 |
| Knutehytta Drift AS | Hospitality | 2025 |
| Kongsberg Bilservice Da | Other services | 2009 |
| Kongsberg Containertransport AS | Transport & logistics | 2000 |
| Kongsberg Electronics AS | Manufacturing | 2004 |
| Kongsberg Entreprenør AS | Construction | 2005 |
| Kongsberg Golfbane SA | Arts & recreation | 1997 |
| Kongsberg Helsesalong AS | Education | 2014 |
| Kongsberg Kranservice AS | Transport & logistics | 2007 |
| Kongsberg Lyd & Lys Systemer AS | Administrative & support | 2019 |
| Kongsberg Maskin AS | Administrative & support | 2017 |
| Kongsberg Maskindrift AS | Construction | 2020 |
| Kongsberg Maskintransport AS | Transport & logistics | 2015 |
| Kongsberg Massegjenvinning AS | Water & waste | 2016 |
| Kongsberg Nails and Beauty AS | Other services | 2017 |
| Kongsberg Resort AS | Real estate | 2005 |
| Kongsberg Steinerskole AS | Education | 2018 |
| Kongsbergporten 2 AS | Real estate | 2013 |
| Kongsbergporten Holding AS | Real estate | 2021 |
| Kongsbergskolen AS | Education | 2013 |
| Konkurssalg Og Import AS | Wholesale & retail | 2014 |
| Kontorbyrået AS | Wholesale & retail | 2017 |
| Kreativ Gulv Behandling Ans | Construction | 2003 |
| Kreklingmat Da | Agriculture & fishing | 2017 |
| Kristoffer Tullerud AS | Construction | 2026 |
| L.K Entreprenør AS | Administrative & support | 2019 |
| Laugerudåsen SA | Water & waste | 2021 |
| Lavo Invest AS | Construction | 2005 |
| LB Auto & Classic AS | Wholesale & retail | 2025 |
| Lege Olav Aandstad AS | Health & social care | 2015 |
| Liemek AS | Manufacturing | 2013 |
| Lifa Eiendom AS | Real estate | 2016 |
| Lilleås Eiendomsinvest AS | Real estate | 2023 |
| Linjordet AS | Agriculture & fishing | 2017 |
| LK Gårdsdrift Da | Agriculture & fishing | 2019 |
| Ly Avlastning AS | Health & social care | 2024 |
| Lågen Bakeri Og Konditori AS | Manufacturing | 2023 |
| Løff Holding AS | Real estate | 2024 |
| Løff Invest AS | | 2024 |
| Løvervannsveiene SA | Real estate | 2015 |
| Løvås Bil AS | Wholesale & retail | 2013 |
| Løvås Eiendom AS | Real estate | 2004 |
| Magnussen Og Grosvold Eiendom AS | Real estate | 2001 |
| Malteriet AS | Manufacturing | 2014 |
| Mandt Marketing AS | Professional & scientific | 2024 |
| MCC Svendsen Holding AS | Real estate | 2021 |
| Medeo AS | Financial services | 2005 |
| Meucci AS | | 2022 |
| Mikalsen Holdingselskap AS | Real estate | 2020 |
| Mohagengården AS | Real estate | 1969 |
| Morten Bjerknes AS | Agriculture & fishing | 2009 |
| MSP Kongsberg AS | Professional & scientific | 2009 |
| Muggerud Regnskap AS | Professional & scientific | 2015 |
| Mulleberg Holding AS | Manufacturing | 2022 |
| Myhregården Invest AS | Financial services | 2005 |
| Nekinor AS | Professional & scientific | 2024 |
| Nero Anlegg AS | Construction | 2023 |
| Nes Sameie Da | Agriculture & fishing | 2014 |
| Nils Løff AS | Manufacturing | 2001 |
| Norsk Bergsikring AS | Construction | 2013 |
| Norsk Solstrøm AS | Professional & scientific | 2018 |
| NTB Maskinservice AS | Manufacturing | 2024 |
| Næss Asfalt AS | Construction | 2005 |
| Oreholt Holding AS | Construction | 2005 |
| Oslo Prosjekt Consult AS | Real estate | 2005 |
| Oslo Tomteservice AS | Construction | 2026 |
| Park & Kombimaskiner Kongsberg AS | Wholesale & retail | 2019 |
| Plommetjernsveien SA | Real estate | 1964 |
| Pont AS | Professional & scientific | 2016 |
| Programbyggerne AS | Information & communication | 2020 |
| R Borgersen AS | Construction | 2017 |
| R. Engeland AS | Construction | 2017 |
| Raje Hyttegrend AS | Real estate | 2004 |
| Rajeveien SA | Construction | 1937 |
| Ravalsjøskogene Ans | Agriculture & fishing | 2005 |
| Renseanleggservice AS | Manufacturing | 2023 |
| Restaureringshjelpen AS | Construction | 2016 |
| Rhask Holding AS | | 2016 |