| Jukasa AS | Professional & scientific | 2016 |
| June Line Design & Produksjon AS | Professional & scientific | 2015 |
| Jær Alt AS | Education | 2024 |
| Jæradvokatene AS | Professional & scientific | 2011 |
| Jærakevitt AS | Manufacturing | 2007 |
| Jærbarnehagen Fus AS | Education | 2018 |
| Jærbjelken Norge AS | Manufacturing | 2020 |
| Jærbladet AS | Information & communication | 1992 |
| Jærbo AS | Real estate | 2012 |
| Jærbu Entreprenør AS | Real estate | 2024 |
| Jærbu Næring 1 AS | Real estate | 2024 |
| Jærbu Næring 2 AS | Real estate | 2024 |
| Jærbu Næring 3 AS | Real estate | 2024 |
| Jærbygg AS | Construction | 2020 |
| Jærbygg Prosjekt AS | Real estate | 2012 |
| Jærconsult AS | Professional & scientific | 2006 |
| Jærconsult Holding AS | Professional & scientific | 2018 |
| Jæregg AS | Real estate | 2020 |
| Jæren Agri AS | Construction | 2024 |
| Jæren Anleggssenter AS | Administrative & support | 2004 |
| Jæren Bilpleie 1 AS | Other services | 2018 |
| Jæren Caravanservice AS | Wholesale & retail | 2018 |
| Jæren Eiendomsmegling AS | Real estate | 2019 |
| Jæren Eiendomsmegling Holding AS | Real estate | 2022 |
| Jæren Gravstein AS | Manufacturing | 2023 |
| Jæren Gull Og Sølvsmie AS | Wholesale & retail | 2017 |
| Jæren Gulv AS | Construction | 2009 |
| Jæren Handlepark 7 AS | Real estate | 2010 |
| Jæren Juletre Da | Wholesale & retail | 2006 |
| Jæren Kaffi Glede AS | Wholesale & retail | 2024 |
| Jæren Maling AS | Construction | 2026 |
| Jæren Næringspark AS | Real estate | 2015 |
| Jæren Opplæringssenter Da | Real estate | 2002 |
| Jæren Overflate Invest AS | | 2024 |
| Jæren Overflatebehandling AS | Manufacturing | 2019 |
| Jæren Pengebinge AS | | 2022 |
| Jæren Pizza AS | Hospitality | 2021 |
| Jæren Skog AS | Agriculture & fishing | 1874 |
| Jæren Smådyrklinikk AS | Professional & scientific | 2019 |
| Jæren Sparebank | Financial services | 1923 |
| Jæren Spesialistklinikk AS | Health & social care | 2016 |
| Jæren Teknologiforum AS | Real estate | 2017 |
| Jæren Tomteutvikling Holding AS | Real estate | 2014 |
| Jæren Transport AS | Transport & logistics | 2026 |
| Jæren Ullgris AS | Agriculture & fishing | 2023 |
| Jæren Veterinærservice AS | Professional & scientific | 1999 |
| Jæren Vinyl AS | Wholesale & retail | 2021 |
| Jærentreprenør Anlegg AS | Construction | 2022 |
| Jærentreprenør AS | Construction | 2010 |
| Jærgynekologane AS | Health & social care | 2016 |
| Jærkalk AS | Wholesale & retail | 2013 |
| Jærkraft Eiendom AS | Real estate | 2014 |
| Jærprint AS | Manufacturing | 2008 |
| Jærrevisjon AS | Professional & scientific | 2005 |
| Jærruta AS | Administrative & support | 2020 |
| Jærsol AS | Wholesale & retail | 2008 |
| Jærtannlegene AS | Health & social care | 2013 |
| Jærtek AS | Information & communication | 2017 |
| Jærterminalen AS | Real estate | 2019 |
| Jærvegen 154 AS | Real estate | 2019 |
| Jærvegen 160 AS | Real estate | 2008 |
| Jærvegen 530 AS | Real estate | 2023 |
| Jærverk AS | Professional & scientific | 2013 |
| Jærøk Da | Professional & scientific | 2003 |
| Jørgen S AS | Health & social care | 2023 |
| K. Hognestad Holding AS | | 2022 |
| Kala TMS AS | Health & social care | 2025 |
| Kalbergskogen Eiendomsutvikling AS | Real estate | 2015 |
| Kalt AS | Real estate | 2010 |
| Kalt Eiendom AS | Construction | 1983 |
| Kant AS | Professional & scientific | 2024 |
| Kaos Media AS | Information & communication | 2024 |
| Kappa AS | Real estate | 1986 |
| Karilunden AS | Hospitality | 2019 |
| Kate Eiendom AS | Real estate | 2009 |
| Kay Betongsaging AS | Construction | 1998 |
| Kent AS | Wholesale & retail | 2015 |
| Kerdos AS | Real estate | 2012 |
| Kharon Invest AS | | 2024 |
| Kirkegaten 9 AS | Real estate | 1998 |
| Kirsti Invest AS | | 2019 |
| KJ Tjenester AS | Administrative & support | 2021 |
| Kjeller 1 AS | Real estate | 2025 |
| Kjærgaard Eiendom AS | Real estate | 2019 |
| Kjøkkenet Bryne AS | Hospitality | 2005 |
| KK A/S | Professional & scientific | 1988 |
| Kkera Invest AS | | 2025 |
| Kla Holding AS | Financial services | 2018 |
| Kleppelundsveien AS | Real estate | 2003 |
| Knama AS | Information & communication | 2025 |
| Knut & Knot AS | Construction | 2026 |
| Knut Molaug Holding AS | | 2025 |
| Kobber AS | | 2019 |
| Koinonia AS | Wholesale & retail | 2013 |
| Konar AS | | 2023 |
| Konrad Kan AS | Professional & scientific | 2009 |
| Kontorplasser AS | Information & communication | 2021 |
| Koreto AS | Wholesale & retail | 2018 |
| Kote AS | Construction | 2010 |
| Kote Hus AS | Real estate | 2026 |