| Schinvest AS | Professional & scientific | 2018 |
| Schjerden Holding AS | Professional & scientific | 2013 |
| Schneider Under Holding AS | | 2024 |
| Schwabesgate 9/11 AS | Real estate | 2013 |
| Sdpd-Plm Consult AS | Professional & scientific | 2016 |
| SE Invest Og Eiendom AS | | 2002 |
| Sebastian Christensen AS | Education | 2014 |
| Seksjonera AS | Professional & scientific | 2025 |
| Semmen Holding AS | Real estate | 2004 |
| Sense AS | Arts & recreation | 2008 |
| Sensor Chemcontrol AS | Information & communication | 1994 |
| Sentrum Gatekjøkken Ans | Hospitality | 1991 |
| Sentrum Kopi Da | Manufacturing | 1993 |
| Sentrumshagen AS | Real estate | 2012 |
| Sentrumsveien AS | Real estate | 2014 |
| Sevag Holding AS | | 2026 |
| SGL Trefelling Og Service AS | Agriculture & fishing | 2020 |
| Shumei AS | Real estate | 2016 |
| Sibu Stasjon AS | Real estate | 2006 |
| Siemens Energy Turbomachinery AS | Manufacturing | 1985 |
| Signe Kristiansen AS | | 2016 |
| Sija Vekst AS | | 2021 |
| Silver Distillery AS | Manufacturing | 2019 |
| Silversky Investments AS | Professional & scientific | 2020 |
| Silversky Securities AS | Professional & scientific | 2024 |
| Silvertown Invest AS | | 2026 |
| Sivesy AS | | 2025 |
| Siwen Consulting AS | Professional & scientific | 2019 |
| Sjakt AS | Professional & scientific | 2026 |
| Sjødal Helse AS | Health & social care | 2025 |
| Sjøvold Holding AS | Administrative & support | 2021 |
| Skarpmoen AS | | 2021 |
| Skarsten Holding AS | | 2026 |
| Skautrollet AS | Education | 1997 |
| Skavanger Matsenter Ans | | 1989 |
| Skolegata 13 AS | Real estate | 2016 |
| Skolegata Tannlegekontor AS | Health & social care | 2025 |
| Skrimfjell AS | Professional & scientific | 2019 |
| Skrimtrollet Barnehage SA | Education | 2008 |
| Skriver Eiendom AS | Real estate | 2016 |
| Skrubben Eiendom AS | Real estate | 2021 |
| Skrubbmoen 11 AS | Real estate | 2026 |
| Skulstad Armeringsservice AS | Construction | 2016 |
| Skytale AS | Information & communication | 2022 |
| Skytterløkka Barnehage SA | Education | 1989 |
| Sle AS | Real estate | 2011 |
| SLG Holding AS | Real estate | 2021 |
| Slipeservice Ans | Manufacturing | 1995 |
| Smak Og Helse AS | Agriculture & fishing | 2016 |
| Smil Hospitality AS | Hospitality | 2020 |
| Snekker Og Byggrenovering AS | Construction | 2017 |
| Snekkerfirma Haugland Og Hofton Da | Construction | 2005 |
| Snotech AS | Professional & scientific | 2023 |
| Snotra Management AS | Wholesale & retail | 1998 |
| Soggebrekken Holding AS | Administrative & support | 2009 |
| SOLAVSKJERMING1 A/S AS | Wholesale & retail | 2017 |
| Solheim Prosjektutvikling Da | Agriculture & fishing | 2004 |
| Solidhåndverk AS | Construction | 2023 |
| Solios AS | | 2022 |
| Solsten Furnitrade AS | Wholesale & retail | 2022 |
| Solstrålen Invest AS | | 2020 |
| Sondre Bjerkerud Holding AS | Arts & recreation | 2020 |
| Sondre Flatin AS | Transport & logistics | 2018 |
| Sonster AS | Real estate | 2008 |
| Soothe Hudpleie AS | Other services | 2019 |
| Sounds Like Norway Nuf | Arts & recreation | 2013 |
| Sova Holding AS | Real estate | 2013 |
| SP Group AS | Real estate | 2005 |
| Sparkleap AS | Information & communication | 2023 |
| Spiderman TV Spill Spesialisten AS | Real estate | 1993 |
| Spikkestad Næringspark AS | Real estate | 2018 |
| Spinnekroken AS | Wholesale & retail | 2019 |
| Spinnvill Kongsberg AS | Arts & recreation | 2024 |
| Spinon Development AS | Professional & scientific | 2006 |
| Spiten Holding AS | | 2020 |
| Spiten Invest AS | Real estate | 2019 |
| Spiten Synssenter AS | Wholesale & retail | 1981 |
| Sport 1 Kongsberg AS | Wholesale & retail | 1998 |
| Sportsveien 14 AS | Real estate | 2023 |
| ST. Hansveien 10 AS | Real estate | 2026 |
| Stahl Invest AS | | 2023 |
| Static Seals AS | Manufacturing | 2023 |
| Steg Rådgivning AS | Professional & scientific | 2000 |
| Steglet Auto AS | Wholesale & retail | 2009 |
| Steglet Frisørsalong AS | Other services | 2012 |
| Steglet Lav-Pris Blomster AS | Real estate | 1992 |
| Steglet Næring AS | Real estate | 2008 |
| Stein Øseth AS | Wholesale & retail | 1998 |
| Steinsund Invest AS | Real estate | 2017 |
| Stengelsrud Invest AS | | 2012 |
| Stensrud Vedlikehold AS | Construction | 2022 |
| Step-In AS | Other services | 2021 |
| Sterte Bygg AS | Real estate | 2002 |
| Sterte Eiendom AS | Professional & scientific | 2017 |
| Stertebakke 3 AS | Real estate | 2023 |
| Stiansen Transport & Import AS | Transport & logistics | 2014 |
| Stiger AS | Real estate | 1997 |
| Stjørdal Sportsfiskesenter A/S | Wholesale & retail | 2004 |
| Stole Eiendom AS | Real estate | 2018 |
| Stor Ja AS | Real estate | 2015 |