| Nagel Holding AS | Construction | 2011 |
| Nevrokiropraktikk Og Helse AS | Health & social care | 2021 |
| New Attitude AS | Other services | 2014 |
| Nielsen Invest AS | Manufacturing | 2003 |
| Night Owl AS | Administrative & support | 2017 |
| Nordmyrveien AS | Real estate | 2026 |
| Norris Invest AS | | 2025 |
| Næss Maskin AS | Construction | 2012 |
| Oculas AS | Administrative & support | 2007 |
| Ok Konsulting AS | Information & communication | 2021 |
| Oslo Multi Service AS | Construction | 2025 |
| Osloveien 355 AS | Real estate | 2012 |
| Overview AS | Professional & scientific | 2024 |
| Perfect Renovations AS | Construction | 2023 |
| Pil & Bue AS | Manufacturing | 2011 |
| Pixie AS | Other services | 2019 |
| Printmax AS | Wholesale & retail | 2014 |
| Puls Tomter AS | Arts & recreation | 2024 |
| Rebellohtakeaway AS | Hospitality | 2025 |
| Reus AS | Information & communication | 2025 |
| Rex AS | Manufacturing | 1992 |
| Salgs & Industriassistanse AS | Manufacturing | 1986 |
| Salma Transport AS | Transport & logistics | 2016 |
| Sangbruket AS | Arts & recreation | 2007 |
| Selje Bo AS | Real estate | 2021 |
| Selje Invest AS | Real estate | 2013 |
| Si Osl 04 AS | Information & communication | 2019 |
| Si Osl 04.2 AS | Information & communication | 2019 |
| Skatho Anlegg AS | Construction | 2021 |
| Snekker Og Tømrer AS | Construction | 2021 |
| Spring-Rolls AS | Manufacturing | 2024 |
| Stasjonsbyen Utvikling AS | Real estate | 2012 |
| Superior Transport AS | Transport & logistics | 2007 |
| Superservice AS | Administrative & support | 2022 |
| Sørby Gruppen AS | | 2026 |
| Sørby Holding AS | Administrative & support | 2011 |
| Sørby Utleie AS | Administrative & support | 2005 |
| Sørbyen Utvikling AS | Real estate | 2021 |
| T Man Group AS | Administrative & support | 2011 |
| T-Man Building AS | Professional & scientific | 1996 |
| T-Man Eiendom AS | Real estate | 1994 |
| Tangenveien AS | Real estate | 2014 |
| Tecnorway AS | Construction | 2022 |
| Tolfshusveien 38 AS | Construction | 2018 |
| Tomter Bil & Service AS | Wholesale & retail | 2024 |
| Tomter Grill & Dagligvare AS | Wholesale & retail | 2021 |
| Tomter Mat & Kiosk AS | Wholesale & retail | 2025 |
| Tomter Service Og Vedlikehold AS | Other services | 2023 |
| Tribune AS | Administrative & support | 2010 |
| Tribunemannen AS | Administrative & support | 2011 |
| Tømrer Og Snekker AS | Construction | 2025 |
| Tømrer Rolf-Martin Bless AS | Construction | 2024 |
| Vaktmester Consult AS | Administrative & support | 1987 |
| Varsko AS | Information & communication | 2023 |
| Vema Interiør AS | Manufacturing | 2016 |
| Vema Produkter AS | Manufacturing | 2005 |
| Verktøy-Bassen AS | Wholesale & retail | 2019 |
| Vesleveien AS | Real estate | 2024 |
| Vesttun Fabrikk AS | Real estate | 2024 |
| Villumstad Holding AS | | 2024 |
| Vitality Nordic AS | Wholesale & retail | 2023 |
| Vitality Nordic Group AS | Wholesale & retail | 2023 |
| VNH Group AS | Other services | 2024 |
| Wes Invest AS | | 2025 |
| Zavi AS | | 2026 |
| Ødeli Maskin & Jordbruk Da | Agriculture & fishing | 2017 |
| Øvre Lippestad Gård Og Kompetansesenter Ans | Education | 2005 |
| Øvre Østfold Regnskapskontor AS | Professional & scientific | 2005 |