| Haug Bygg & Takst AS | Construction | 2023 |
| Haug Capital AS | | 2021 |
| Haug Eiendomsutvikling AS | Financial services | 2001 |
| Haug Og Sønner Eiendom AS | Real estate | 2014 |
| Haug Sundene AS | | 2021 |
| Haug Ventures AS | | 2022 |
| Haugaland Skyssbåt AS | Administrative & support | 2007 |
| Haugan Import AS | Wholesale & retail | 2026 |
| Haugan Invest AS | Health & social care | 2024 |
| Haugane Holding AS | Real estate | 2022 |
| Haugane Takst AS | Real estate | 2022 |
| Haugartunet AS | Real estate | 2017 |
| Haugbo Gård AS | Real estate | 2020 |
| Hauge 1-5 AS | Real estate | 2008 |
| Hauge Byggteknikk AS | Construction | 2014 |
| Hauge Eiendom AS | Real estate | 1986 |
| Hauge Elektro AS | Construction | 1987 |
| Haugen & Damsund Ans | Real estate | 2004 |
| Haugen / Zohar Arkitekter AS | Professional & scientific | 2012 |
| Haugen a AS | | 2022 |
| Haugen Advisory AS | Professional & scientific | 2025 |
| Haugen B AS | | 2022 |
| Haugen C AS | | 2022 |
| Haugen D AS | | 2022 |
| Haugen Holding AS | Real estate | 2005 |
| Haugen Montasje AS | Construction | 2023 |
| Haugen Multimedia AS | Education | 2023 |
| Haugen Psykologtjeneste Og Coaching AS | Health & social care | 2017 |
| Haugen Torg AS | Wholesale & retail | 2024 |
| Haugens Bilshine AS | Other services | 2012 |
| Haugenstua Bil Service AS | Other services | 2016 |
| Haugenstua Butikksenter AS | Real estate | 2006 |
| Haugenstua Bygg AS | Construction | 2024 |
| Haugenstua Eiendom Ans | Real estate | 2000 |
| Haugenstua Eiendom AS | Real estate | 2005 |
| Haugenstua Kafe & Catering AS | Hospitality | 2018 |
| Haugenstua Klinikken AS | Real estate | 2013 |
| Haugenstua Legesenter Da | Health & social care | 1999 |
| Haugenstua Senter AS | Real estate | 2010 |
| Haugenstua Skoles Barnehage SA | Education | 1990 |
| Haugenstua Transport AS | Transport & logistics | 2013 |
| Haugentur AS | Administrative & support | 2010 |
| Hauger Invest AS | Real estate | 2019 |
| Haugerbakken AS | Real estate | 2019 |
| Haugerkroken Invest AS | Real estate | 2024 |
| Haugerud Legesenter AS | Health & social care | 2023 |
| Haugerud Pub AS | Hospitality | 2021 |
| Haugerud Senter AS | Real estate | 2017 |
| Haugerud Sushi & Wok AS | Hospitality | 2021 |
| Haugerud VVS AS | Construction | 2024 |
| Haugerudbråtan Utvikling AS | Real estate | 2025 |
| Haugerudhagan Eiendom AS | Real estate | 2010 |
| Haugerudklinikken AS | Health & social care | 2018 |
| Haugeråsen Eiendom AS | | 2007 |
| Haugerø Invest AS | | 2025 |
| Haugestad Design AS | Professional & scientific | 2013 |
| Haugesund Autocenter AS | Real estate | 2023 |
| Haugesund Eiendom AS | Real estate | 2006 |
| Haugesundgate 27 AS | Real estate | 2008 |
| Haugesundsgata Eiendom AS | Real estate | 2008 |
| Haughom Holding AS | Real estate | 2021 |
| Hauglandsøy Fritid AS | Real estate | 2013 |
| Haugli Osteopati AS | Health & social care | 2026 |
| Hauglid Holding AS | Real estate | 2016 |
| Haugom & Hagen AS | Administrative & support | 2024 |
| Haugom & Hagen Live AS | Professional & scientific | 2024 |
| Haugom & Kristensen Holding AS | Professional & scientific | 2012 |
| Haugom Technologies AS | Professional & scientific | 2012 |
| Haugomgata 17-19 AS | Real estate | 2005 |
| Haugsevje Og Jakobsen Holding AS | Wholesale & retail | 2022 |
| Haugsjåbak AS | Hospitality | 2026 |
| Haugstenåsen Utvikling AS | Real estate | 2013 |
| Haugstoga - Granheim AS | Health & social care | 2005 |
| Haugstulen Mekaniske AS | Manufacturing | 2004 |
| Haugsvold Eiendom AS | Real estate | 2022 |
| Haugsvær Agentur AS | Wholesale & retail | 1991 |
| Haugtuft Eiendom AS | Real estate | 1998 |
| Haugtussa Bak Slottet AS | Manufacturing | 1996 |
| Haugum Invest AS | Professional & scientific | 2005 |
| Haugåker Prosjekt AS | Real estate | 2021 |
| Hauk HH Entertainment AS | Arts & recreation | 2025 |
| Hauk Og Frue AS | Real estate | 2005 |
| Hauk.Ai AS | Professional & scientific | 2018 |
| Haukaas AS | Information & communication | 2009 |
| Haukaas Eiendom AS | Real estate | 2018 |
| Haukdal Invest AS | | 2021 |
| Haukeblikk AS | Financial services | 2014 |
| Haukeli Invest AS | Financial services | 2009 |
| Hauken Holding AS | | 2019 |
| Haukeredet AS | Professional & scientific | 2022 |
| Hauketo Car Spa Og Dekksenter AS | Other services | 2019 |
| Hauketo Eiendom AS | Real estate | 1997 |
| Hauketo Eiendomsinvest AS | Professional & scientific | 2004 |
| Hauketo Invest AS | Real estate | 2020 |
| Hauketo Logistikk Invest AS | Real estate | 2019 |
| Hauketo Senter AS | Real estate | 2016 |
| Hauketo Terrasse AS | Real estate | 2013 |
| Hauketoveien 15 AS | Real estate | 2020 |
| Hauketoveien Eiendom AS | Real estate | 2002 |
| Haukgren AS | | 2023 |