| Haugaland Kraft Fiber AS | Information & communication | 2015 |
| Haugaland Malerservice AS | Construction | 2018 |
| Haugaland Næringspark AS | Real estate | 2001 |
| Haugaland R1 AS | Wholesale & retail | 2013 |
| Haugaland R2 AS | Financial services | 2014 |
| Haugaland R4 AS | Wholesale & retail | 2014 |
| Haugaland Regnskap AS | Professional & scientific | 2017 |
| Haugaland Rengjøringsservice AS | Administrative & support | 1982 |
| Haugaland Revisjon AS | Professional & scientific | 2015 |
| Haugaland Rørspyling AS | Construction | 2021 |
| Haugaland Sjø AS | Financial services | 2005 |
| Haugaland Sykkelverksted AS | Other services | 2017 |
| Haugaland Takst AS | Professional & scientific | 2014 |
| Haugaland Taxi AS | Transport & logistics | 1995 |
| Haugaland Taxi Bud Ans | Transport & logistics | 1998 |
| Haugaland Transportskole AS | Education | 1998 |
| Haugaland Tregulvservice AS | Construction | 2021 |
| Haugaland Utleie Og Eiendomstjenester AS | Real estate | 2021 |
| Haugaland Vakt Service AS | Administrative & support | 2016 |
| Haugaland Vaktmestertjeneste AS | Administrative & support | 2021 |
| Haugalandet Engros AS | Wholesale & retail | 2016 |
| Haugalandet Investment AS | Wholesale & retail | 2003 |
| Haugalandmuseet AS | Arts & recreation | 2005 |
| Haugalandsveggen AS | Construction | 2014 |
| Haugarhallen AS | Real estate | 2007 |
| Haugehus Eiendom AS | Real estate | 2020 |
| Haugen Investeringer AS | Real estate | 2020 |
| Haugen-Holding AS | Real estate | 2004 |
| Haugen-Prosjekt AS | Professional & scientific | 2023 |
| Haugesild Eiendomsmegling AS | Real estate | 2021 |
| Haugesund Akupunkturklinikk AS | Health & social care | 2022 |
| Haugesund Antirust AS | Other services | 1996 |
| Haugesund Autoservice AS | Other services | 2016 |
| Haugesund Backline AS | Arts & recreation | 2024 |
| Haugesund Barberstue AS | Other services | 2025 |
| Haugesund Bazaar AS | Wholesale & retail | 2022 |
| Haugesund Bilsenter AS | Wholesale & retail | 2021 |
| Haugesund Bok & Offset AS | Real estate | 2001 |
| Haugesund Bolig Og Prosjektmegling AS | Real estate | 2024 |
| Haugesund Boligutleie AS | Real estate | 2005 |
| Haugesund Bowling Og Biljard AS | Arts & recreation | 1989 |
| Haugesund Bygg & Eiendom AS | Construction | 2020 |
| Haugesund Drift AS | Hospitality | 2018 |
| Haugesund Eiendomsselskap AS | Real estate | 2009 |
| Haugesund Elektriske Forretning AS | Construction | 1925 |
| Haugesund EU Og Rep AS | Other services | 2024 |
| Haugesund Flis Holding AS | Real estate | 2007 |
| Haugesund Fysioterapi Og Trening AS | Health & social care | 2012 |
| Haugesund Godteland AS | Wholesale & retail | 2021 |
| Haugesund Golfdrift AS | Arts & recreation | 2021 |
| Haugesund Gulvservice AS | Construction | 2025 |
| Haugesund Hobby Ans | Wholesale & retail | 1996 |
| Haugesund Holding AS | Education | 2006 |
| Haugesund International Preschool Fus AS | Education | 2019 |
| Haugesund Kaffilab AS | Manufacturing | 2020 |
| Haugesund Kiropraktorsenter AS | Health & social care | 2005 |
| Haugesund Lakksenter AS | Other services | 1998 |
| Haugesund Live AS | Arts & recreation | 2025 |
| Haugesund Luftfoto AS | Professional & scientific | 2012 |
| Haugesund Malerservice AS | Construction | 2019 |
| Haugesund Maling Og Tapetsering AS | Construction | 2022 |
| Haugesund Marine Service AS | Manufacturing | 2006 |
| Haugesund Medisinske Allmennleger AS | Health & social care | 2013 |
| Haugesund Miljø - Palleboden Ans | Water & waste | 1997 |
| Haugesund Nevropsykologiske Tjenester AS | Health & social care | 2012 |
| Haugesund Næringspark AS | Real estate | 2007 |
| Haugesund Næringspark II AS | Real estate | 2013 |
| Haugesund Næringspark III AS | Real estate | 2024 |
| Haugesund Omland Skoglag AS | Agriculture & fishing | 1951 |
| Haugesund Parkering Drift AS | Transport & logistics | 1984 |
| Haugesund Parkering Holding AS | Transport & logistics | 2007 |
| Haugesund Parkering Utbygging Nord AS | Transport & logistics | 2007 |
| Haugesund Property AS | Real estate | 2021 |
| Haugesund Psykiatriske Senter AS | Health & social care | 2005 |
| Haugesund Regnskap AS | Professional & scientific | 2013 |
| Haugesund Renhold AS | Administrative & support | 2023 |
| Haugesund Rør Invest | | 2021 |
| Haugesund Sanitetsforenings Revmatismesykehus AS | Health & social care | 2003 |
| Haugesund Sentrum Næringsdrift AS | Other services | 1995 |
| Haugesund Silketrykk AS | Manufacturing | 1997 |
| Haugesund Sjø AS | | 2012 |
| Haugesund Skade & Lakk AS | Other services | 2019 |
| Haugesund Skips Og Offshore Service AS | Administrative & support | 1993 |
| Haugesund Sparebank | Financial services | 1928 |
| Haugesund Stadion AS | Real estate | 2012 |
| Haugesund Storkjøkken AS | Wholesale & retail | 2002 |
| Haugesund Sykkelsenter AS | Wholesale & retail | 2006 |
| Haugesund Tak & Terrasse AS | Construction | 2020 |
| Haugesund Tannmedisin AS | Health & social care | 2019 |
| Haugesund Taxi SA | Transport & logistics | 1965 |
| Haugesund Teater AS | Arts & recreation | 1986 |
| Haugesund Toppidrettsgymnas AS | Education | 1989 |
| Haugesund Transport AS | Transport & logistics | 2013 |
| Haugesund Turbiler Ans | Transport & logistics | 1998 |
| Haugesundaren AS | Administrative & support | 1998 |
| Haugesundet Holding AS | | 2021 |
| Haugesunds Høvleri & Trælastforretning AS | Real estate | 1917 |
| Haugesønn Eiendom AS | Real estate | 1999 |
| Haugevegen 35 AS | Real estate | 2022 |
| Haugeveien 62 AS | Real estate | 1977 |