| Pasta Og Basta AS | Professional & scientific | 2019 |
| Per & Morten Haneborg Ans | Agriculture & fishing | 1995 |
| Petpack Drikker AS | Manufacturing | 2016 |
| Planet Orange Productions AS | Information & communication | 2026 |
| Powerwrap AS | Professional & scientific | 2020 |
| Premier Og Hobby AS | Wholesale & retail | 2014 |
| Progressum Lierfoss AS | Professional & scientific | 2009 |
| Prosessystemer AS | Manufacturing | 1988 |
| Prosjektalkymi AS | Arts & recreation | 2025 |
| Ra Utvikling AS | Real estate | 2015 |
| Randem Holding AS | | 2024 |
| Rapid Gruppen AS | Administrative & support | 1994 |
| Reith Og Sandsund AS | Health & social care | 2014 |
| Ringkilen Eiendom Og Utleie AS | Real estate | 2020 |
| Ringkilen Kran Og Transport AS | Transport & logistics | 2020 |
| River Holding AS | Other services | 2019 |
| Romeriksåsen AS | Real estate | 2008 |
| Romsly AS | Construction | 2023 |
| Rosseland Holding AS | Other services | 2019 |
| Rstre AS | Information & communication | 2020 |
| Rua AS | Wholesale & retail | 2021 |
| Rusvingen 48 AS | Transport & logistics | 2024 |
| Røed Fjellboring AS | Construction | 1997 |
| Rørlegger Kriebel AS | Construction | 2014 |
| SB Consulting Norway Limited Nuf | Transport & logistics | 2024 |
| Scandic Design & Decor AS | Other services | 2023 |
| SD Scandinavian Art and Rare Book Auctions AS | Wholesale & retail | 2025 |
| Se-Bø Holding AS | Real estate | 2020 |
| Seaberg Invest AS | | 2024 |
| SGF Invest AS | | 2023 |
| Showbizz AS | Arts & recreation | 2012 |
| Simen Berge Eiendom AS | Real estate | 2022 |
| Simen Berge Holding AS | Administrative & support | 2022 |
| Sjarm Fotostudio AS | Professional & scientific | 2007 |
| Sjå Invest AS | Construction | 2010 |
| SK Transport AS | Transport & logistics | 2023 |
| Skandinavisk Snus Og Tobakk AS | Wholesale & retail | 2018 |
| Skarpsno Invest AS | | 2020 |
| Skogmo Eiendom AS | Real estate | 2013 |
| Skogsbilveglaget Ulviken - Nes Grense - Bjørnstad SA | Real estate | 2014 |
| Slemdal AS | Administrative & support | 1994 |
| Smart Rail Produksjon AS | Manufacturing | 2025 |
| SMB Real Estate AS | Real estate | 2021 |
| Smeby Holding AS | | 2025 |
| Snorre Bakke Holding AS | | 2020 |
| Sntb Eiendom AS | Real estate | 2012 |
| Solheim Hagesenter AS | Wholesale & retail | 1998 |
| Solmo Holding AS | Manufacturing | 2020 |
| Sondre Bakke Holding AS | | 2020 |
| Stangeskovene AS | Agriculture & fishing | 1899 |
| Stangeskovene Handel AS | Wholesale & retail | 2016 |
| Stangeskovene Industri AS | Manufacturing | 2016 |
| Stella Marketing AS | Professional & scientific | 2019 |
| Stendansen AS | Real estate | 2015 |
| Steniko Kapital AS | | 2021 |
| Stenqvist AS | Manufacturing | 1986 |
| Stenqvist Logistics AS | Real estate | 2007 |
| Stian Sveistrup Holding AS | | 2020 |
| Stig Thoresen AS | Construction | 2024 |
| Studio Flid Frisør AS | Other services | 2017 |
| Styrekompasset AS | Professional & scientific | 2026 |
| Sveen Bil Aurskog AS | Other services | 2021 |
| Svein Heiberg Invest AS | Real estate | 2018 |
| Sveistrup AS | Wholesale & retail | 2008 |
| Sveistrup Eiendom AS | Real estate | 2005 |
| Sveistrup Holding AS | Real estate | 2020 |
| T E Hauger Holding AS | Professional & scientific | 2007 |
| T-Lys Gruppen AS | Construction | 2012 |
| Talkom AS | Wholesale & retail | 2013 |
| Technipro Ans | Manufacturing | 2001 |
| Tenura Holding AS | Professional & scientific | 2017 |
| Terri Norge AS | Agriculture & fishing | 2024 |
| Tertitten Eiendom AS | Real estate | 2010 |
| Teslab AS | Other services | 2024 |
| Thai Kitchen AS | Hospitality | 2013 |
| Thygesen AS | Construction | 1998 |
| Thygesen Bolig AS | Real estate | 2022 |
| Thygesen Næring AS | Real estate | 2022 |
| Thygesen Total AS | Construction | 2022 |
| Titansport AS | Manufacturing | 1994 |
| Tom Haugen AS | Transport & logistics | 2021 |
| Tom Haugen Transport AS | Transport & logistics | 2021 |
| Top Pet Products AS | Wholesale & retail | 2020 |
| Torvstrøvegen AS | Real estate | 2021 |
| Tough Thumb AS | Wholesale & retail | 2024 |
| Toves Salong AS | Other services | 2011 |
| Trampen Barnehage AS | Education | 2022 |
| Treton Logistics AS | Transport & logistics | 2024 |
| TRI3SPORT & Service AS | Wholesale & retail | 2014 |
| Trinita AS | Wholesale & retail | 2014 |
| TTN Entreprenør AS | Construction | 2024 |
| Ubevisst Aksjeselskap | Information & communication | 2021 |
| Urskog AS | Financial services | 2015 |
| Vannbærernes Vannverk SA | Water & waste | 1971 |
| Varsjø Elektro AS | Professional & scientific | 1998 |
| Vedlikeholdsfaktor AS | Professional & scientific | 2003 |
| Vemore AS | | 2025 |
| Verktøyerodering AS | Manufacturing | 1970 |
| Vestby Service AS | Construction | 2022 |
| Viande AS | Hospitality | 2023 |