| Kragerø Festivaldrift AS | Arts & recreation | 2019 |
| Kragerø Flerbrukshall AS | Real estate | 2025 |
| Kragerø Flis Og Mur AS | Construction | 2009 |
| Kragerø Fritidsservice AS | Administrative & support | 2020 |
| Kragerø Holding AS | Real estate | 2005 |
| Kragerø Hotell AS | Hospitality | 2019 |
| Kragerø Industriutleie Holding AS | Real estate | 2021 |
| Kragerø Installasjon AS | Construction | 2012 |
| Kragerø Invest AS | Real estate | 1999 |
| Kragerø Kjøkkensenter AS | Wholesale & retail | 2020 |
| Kragerø Kunstskole AS | Education | 2009 |
| Kragerø Lagerutleie AS | Real estate | 2017 |
| Kragerø Laks AS | Real estate | 2014 |
| Kragerø Lavpris AS | Wholesale & retail | 1999 |
| Kragerø Legesenter AS | Health & social care | 2024 |
| Kragerø Mekaniske Verksted AS | Manufacturing | 2017 |
| Kragerø Mineralvandfabrik AS | Financial services | 1969 |
| Kragerø Parkering AS | Transport & logistics | 2019 |
| Kragerø Patriotene AS | Real estate | 2018 |
| Kragerø Resort Eiendom 2 AS | Real estate | 2022 |
| Kragerø Resort Heia AS | Real estate | 2022 |
| Kragerø Resort Parkering AS | Real estate | 2022 |
| Kragerø Rib AS | Transport & logistics | 2007 |
| Kragerø Rørservice AS | Construction | 2019 |
| Kragerø Sjøenergi AS | Energy | 2020 |
| Kragerø Sjømat AS | Manufacturing | 1988 |
| Kragerø Sjøtjenester AS | Transport & logistics | 2011 |
| Kragerø Sportell Og Apartments AS | Hospitality | 1999 |
| Kragerø Stasjon AS | Real estate | 2020 |
| Kragerø Stenindustri AS | Manufacturing | 1997 |
| Kragerø Sushi AS | Hospitality | 2014 |
| Kragerø Søyler & Beleggningsstein Da | Construction | 2007 |
| Kragerø Tablettproduksjon AS | Manufacturing | 2002 |
| Kragerø Tablettproduksjon Drift AS | Manufacturing | 2018 |
| Kragerø Taxi Da | Transport & logistics | 1996 |
| Kragerø Thaimat AS | Hospitality | 2019 |
| Kragerø Utbygging AS | Real estate | 2017 |
| Kragerø Utvikling AS | Real estate | 2003 |
| Kragerø Ven Seil AS | Manufacturing | 2009 |
| Kragerø VVS AS | Construction | 2009 |
| Kragerømaleren AS | Construction | 2007 |
| Kragerøsnekkeren AS | Construction | 2013 |
| Kragerøtannlegene AS | Health & social care | 2015 |
| Kragerøveien 520 AS | Real estate | 2009 |
| Krigensborg Holding AS | Hospitality | 2020 |
| Kultur-Kameratene AS | Arts & recreation | 2015 |
| Kulturstasjonen AS | Administrative & support | 2022 |
| Kystbo Kragerø AS | Real estate | 2015 |
| Kystentreprenøren AS | Transport & logistics | 2009 |
| L Lerin AS | Wholesale & retail | 2024 |
| L'Orto Abbandonato AS | Wholesale & retail | 2014 |
| La Escalera AS | Hospitality | 2020 |
| Lab Holding AS | Real estate | 2012 |
| Lalla Gundersen AS | Real estate | 1972 |
| Lamsam AS | Hospitality | 2024 |
| Langholmen AS | | 2023 |
| Lauersens Bakke 1B | Real estate | 2016 |
| Leco Bygg AS | | 2017 |
| Leco Næring AS | Wholesale & retail | 2014 |
| Lege Eline Aasen AS | Health & social care | 2026 |
| Legedraryee AS | Health & social care | 2025 |
| Lek Holding AS | Wholesale & retail | 2005 |
| Lemon Agency AS | Real estate | 2022 |
| Lermo AS | Real estate | 2017 |
| Liane Invest AS | Real estate | 2007 |
| Lift Og Maskinutleie AS | Administrative & support | 2020 |
| Lindestad Eiendom AS | Real estate | 2006 |
| Lindtvedt AS | Administrative & support | 2025 |
| Lionking Holding AS | | 2022 |
| Lise Ann's AS | Wholesale & retail | 2012 |
| Litangen Eiendom AS | Real estate | 2011 |
| Litangen Utvikling AS | Construction | 2008 |
| Lobowolf AS | Wholesale & retail | 2023 |
| Lokator AS | Real estate | 2017 |
| Lovisenberg Campingdrift AS | Hospitality | 2006 |
| LTL 24 AS | Professional & scientific | 1999 |
| Luchri Invest AS | Financial services | 2006 |
| Lutro Maskin AS | Manufacturing | 2026 |
| Lux Group AS | Wholesale & retail | 2024 |
| Lydlåven AS | Arts & recreation | 2007 |
| Lydselskapet AS | Information & communication | 2024 |
| Lød AS | Manufacturing | 2014 |
| Løkka Fysioterapiklinikk AS | Health & social care | 2014 |
| Løkka Yoga Eiendom AS | Real estate | 2019 |
| Løkkebakken 8 AS | Real estate | 2005 |
| Løkkebakken Eiendom AS | Real estate | 1999 |
| Løkkebakken Regnskap Og Rådgivning AS | Professional & scientific | 2018 |
| Lønne Eiendom AS | Real estate | 2021 |
| M Isaksen Holding AS | | 2022 |
| Mabrime Garn Og Systue Da | Manufacturing | 1988 |
| Mandelbrot Media AS | Transport & logistics | 2012 |
| Marina Service AS | Wholesale & retail | 1995 |
| Marina-Eiendom AS | Wholesale & retail | 2015 |
| Marina-Holding AS | Wholesale & retail | 2015 |
| Marinex AS | Professional & scientific | 2011 |
| Mariusz Krekora Bud Mar | Construction | 2007 |
| Mark & Grøde AS | Manufacturing | 2015 |
| Maskinentreprenør Kvilekval AS | Construction | 2009 |
| Master Minds of Training AS | Arts & recreation | 2013 |
| Mastereid AS | | 2021 |