| Scandinavian Fittings & Flanges Holding AS | Manufacturing | 1993 |
| Scandinavian Fittings and Flanges AS | Wholesale & retail | 1991 |
| Scandinavian Stockphoto AS | Wholesale & retail | 2007 |
| Scandinavian Tele-Media Services Ans | Information & communication | 1998 |
| Scanfloor AS | Wholesale & retail | 2018 |
| Scankab Cables AS | Wholesale & retail | 2004 |
| Scanlift Holding AS | | 2022 |
| Scanlift Maskin AS | Wholesale & retail | 2022 |
| Scanlift Rental AS | Administrative & support | 2008 |
| Schaeffler Norge AS | Wholesale & retail | 1979 |
| Schantz Og Deisz Finans Da | | 1993 |
| Schmidt AS | Professional & scientific | 1991 |
| Schou-Andreassen AS | Wholesale & retail | 1985 |
| Schrødahl Holding AS | | 2020 |
| Schwer Fittings AS | Professional & scientific | 2012 |
| Sci Eiendom AS | Real estate | 2026 |
| SCIENTIFIC DRILLING CONTROLS LTD Forretningsavdeling av utenlandsk foretak NUF | Professional & scientific | 1995 |
| Scope Service AS | Professional & scientific | 2022 |
| Scott Milne AS | Real estate | 2009 |
| Sda Invest AS | Financial services | 2010 |
| SE Fasade Ltd Nuf | Construction | 2025 |
| Se-Bo AS | Real estate | 2004 |
| Sea Tech International AS | Wholesale & retail | 2004 |
| Sea Truck Holding AS | Real estate | 2017 |
| Seaberg AS | Professional & scientific | 2012 |
| Seahorse Holding AS | Financial services | 2015 |
| Seal Weld Pro AS | Wholesale & retail | 1999 |
| Seanor Maritime AS | Transport & logistics | 2016 |
| Seascape AS | Real estate | 2009 |
| Seaway Systems AS | Wholesale & retail | 2003 |
| Secure-Nok AS | Professional & scientific | 2020 |
| Secure-Nok Corp AS | Professional & scientific | 2019 |
| Secure-Nok Technology AS | Information & communication | 2011 |
| Seglend AS | Transport & logistics | 2013 |
| Seid AS | Manufacturing | 2013 |
| Seira AS | | 2022 |
| Seiren AS | Hospitality | 2020 |
| Sekhmet AS | | 2026 |
| Seksjon 6 AS | Real estate | 2022 |
| Sektor Invest AS | Real estate | 2002 |
| Sektor Invest II AS | Real estate | 2018 |
| Seland Optikk Sandnes AS | Wholesale & retail | 2001 |
| Seldal Gard Ans | Agriculture & fishing | 2013 |
| Seldal Holding AS | Administrative & support | 2016 |
| Seldal Maskin AS | Construction | 2012 |
| Sele Invest AS | Hospitality | 2019 |
| Selma Kafe - Avd. Elvegata AS | Wholesale & retail | 2023 |
| Selmer Equities AS | | 2020 |
| Selvaag Bolig Vaagen AS | Real estate | 2013 |
| Selvig Design AS | Professional & scientific | 2019 |
| Sema Protection AS | Information & communication | 2020 |
| Semco Maritime Drift AS | Administrative & support | 2014 |
| Semso AS | Professional & scientific | 2025 |
| Sense Garn AS | Wholesale & retail | 2022 |
| Sense Personell AS | Administrative & support | 2020 |
| Sense Personell Stavanger AS | Administrative & support | 2016 |
| Senteco AS | Information & communication | 2019 |
| Sentrum Areal AS | Real estate | 2023 |
| Sentrum Legesenter Sandnes AS | Health & social care | 2024 |
| Service Master AS | Administrative & support | 2012 |
| Servicemodul AS | Information & communication | 2017 |
| Servicepartner Norge AS | Construction | 2017 |
| Servise & Sjåførtjenester AS | Transport & logistics | 2012 |
| Servit Catering AS | Hospitality | 1991 |
| Servtech AS | Professional & scientific | 2010 |
| Servtech Global AS | Professional & scientific | 2016 |
| Servtech Personell AS | Administrative & support | 2010 |
| Servtech Personell Bergen AS | Administrative & support | 2025 |
| Servtech Personell Vest AS | Administrative & support | 2023 |
| Servtech Rental AS | Administrative & support | 2024 |
| Sevest AS | Wholesale & retail | 2000 |
| Sgrøtting Invest AS | Professional & scientific | 2023 |
| Sha-Assistanse AS | Professional & scientific | 2019 |
| Shaahi Mahall AS | Hospitality | 2025 |
| Shaipov Invest AS | | 2019 |
| Shareholder AS | | 2021 |
| SHB Holding AS | Professional & scientific | 2016 |
| Shekhy AS | Other services | 2021 |
| Shelf Drilling (Norway) AS | Mining & quarrying | 2023 |
| Sherpa Holding AS | | 2025 |
| Shewan Holding AS | Wholesale & retail | 2023 |
| Shortt Holding AS | | 2019 |
| Shotokan Karate AS | Education | 2014 |
| Show Off AS | Professional & scientific | 2017 |
| Show Off Holding AS | | 2024 |
| Show Off Temp AS | Professional & scientific | 2024 |
| Showroom AS | Wholesale & retail | 2005 |
| SHS Tech AS | Administrative & support | 2024 |
| SHT Eiendom AS | Real estate | 2008 |
| SHW Logistics AS | Transport & logistics | 2024 |
| Si Trend AS | Real estate | 2003 |
| Sifab AS | Wholesale & retail | 2004 |
| Sifab Bolig AS | Real estate | 2021 |
| Sifab Bygg AS | Construction | 2018 |
| Sifotek AS | Professional & scientific | 2021 |
| Sig Halvorsen AS | Construction | 1996 |
| Sig Halvorsen Eiendom AS | Real estate | 1980 |
| Sigbjørn Askeland Holding AS | | 2023 |
| Siggjo Invest AS | | 2026 |
| Sigmag Invest AS | Real estate | 2004 |