| Sandvika Auto Care AS | Other services | 2011 |
| Sandvika Bardrift AS | Hospitality | 2021 |
| Sandvika Barnelegesenter AS | Health & social care | 2021 |
| Sandvika Bingo AS | Arts & recreation | 2001 |
| Sandvika Boligutvikling Næring I AS | Real estate | 2010 |
| Sandvika Boligutvikling Næring III AS | Real estate | 2010 |
| Sandvika Bowling AS | Arts & recreation | 2016 |
| Sandvika Butikkdrift AS | Wholesale & retail | 2021 |
| Sandvika by AS | Professional & scientific | 2013 |
| Sandvika Byggservice AS | Construction | 2024 |
| Sandvika Eiendomsmegling AS | Real estate | 2011 |
| Sandvika Elektro AS | Construction | 2006 |
| Sandvika Eritreisk Restaurant AS | Hospitality | 2025 |
| Sandvika Fjordturer AS | Transport & logistics | 2002 |
| Sandvika Foto AS | Wholesale & retail | 2013 |
| Sandvika Frukt Og Grønt AS | Wholesale & retail | 2017 |
| Sandvika Fysioterapi AS | Health & social care | 2019 |
| Sandvika Helsesenter AS | Health & social care | 1998 |
| Sandvika Hjertesenter AS | Health & social care | 2025 |
| Sandvika Hud Og Kroppssenter AS | Other services | 1999 |
| Sandvika Hårdesign Da | Other services | 2002 |
| Sandvika Hørsel AS | Health & social care | 2024 |
| Sandvika Kjøttbutikk AS | Hospitality | 2021 |
| Sandvika Nails & Beauty AS | Other services | 2020 |
| Sandvika Osmani Kebab AS | Hospitality | 2022 |
| Sandvika Parkeringsselskap AS | Transport & logistics | 2001 |
| Sandvika Regnskap Holding AS | Professional & scientific | 2005 |
| Sandvika Reumatologi Drift AS | Health & social care | 2022 |
| Sandvika Reumatologipraksis AS | Health & social care | 2022 |
| Sandvika Rørleggerbedrift AS | Construction | 2011 |
| Sandvika Rørservice AS | Construction | 2010 |
| Sandvika Specsavers AS | Wholesale & retail | 2009 |
| Sandvika Spesialistsenter AS | Health & social care | 2012 |
| Sandvika Sushi AS | Hospitality | 2016 |
| Sandvika Svimmelhetssenter AS | Health & social care | 2023 |
| Sandvika Tannklinikk Da | Health & social care | 2009 |
| Sandvika Transport AS | Transport & logistics | 2022 |
| Sandvika Vaktmesterservice AS | Construction | 2014 |
| Sandviksveien 143 AS | Real estate | 2024 |
| Sandviksveien 147 AS | Real estate | 2024 |
| Sandviksveien 157 AS | Real estate | 1976 |
| Sandviksåsen AS | | 2020 |
| Sanz Frisør Sandvika AS | Other services | 2016 |
| Saporito AS | Hospitality | 2012 |
| Sareo AS | Professional & scientific | 2014 |
| Sawi Bygg AS | Construction | 2015 |
| SBL Konsulentvirksomhet AS | Education | 2021 |
| Sca Bygg AS | Construction | 2015 |
| Sca Group AS | Real estate | 2015 |
| Scaffon AS | Construction | 2013 |
| Scancat AS | Wholesale & retail | 2004 |
| Scandinavian Holding AS | Wholesale & retail | 2019 |
| Scenario AS | Education | 1981 |
| Scorett Footwear AS | Wholesale & retail | 2025 |
| Seait AS | Information & communication | 2022 |
| See AS | Health & social care | 2015 |
| Sengoku AS | Hospitality | 2019 |
| Senn Holding AS | Real estate | 2019 |
| Sense by Puls AS | Wholesale & retail | 2024 |
| Senterklinikken AS | Health & social care | 2007 |
| Servicebuddy AS | Information & communication | 2026 |
| Seterstuveien AS | Financial services | 2005 |
| Shgh AS | Professional & scientific | 2026 |
| Shineup KG AS | Other services | 2025 |
| Simsim Hong AS | Hospitality | 2015 |
| Sinco AS | Real estate | 1980 |
| Sinus Control AS | Professional & scientific | 2002 |
| Sir James AS | Hospitality | 1997 |
| Siva Investment AS | Real estate | 2016 |
| Siviling Anders Balstad AS | Professional & scientific | 2015 |
| Sjulstad Holding AS | | 2025 |
| Sjøakademiet AS | Education | 2019 |
| Skarv Alarm AS | Wholesale & retail | 2026 |
| Skogstad Kinetiks AS | Health & social care | 2009 |
| Sky Tours AS | Administrative & support | 2025 |
| Skytterdalen Skolebygg AS | Real estate | 1979 |
| Slemmestad Velvære AS | Real estate | 1995 |
| Slemmestadsenteret AS | Real estate | 2003 |
| Smart Oppussing AS | Professional & scientific | 2017 |
| Smart Patents AS | Professional & scientific | 2016 |
| Smart Patents Holding AS | Administrative & support | 2016 |
| Smarte Hjem AS | Real estate | 2017 |
| Smile Massasje AS | Other services | 2020 |
| Snekker Og Tømrerforretning Poul Martin Bang Olsen | Construction | 1997 |
| Snos Sandvika AS | Wholesale & retail | 2022 |
| Snupi Invest AS | Real estate | 2006 |
| Snøkraft AS | Professional & scientific | 2026 |
| Social Garden AS | Information & communication | 2019 |
| Sofienlund Holding AS | | 2013 |
| Sognsvannsveien Gaustad AS | Real estate | 2003 |
| Solvikveien 12 AS | Real estate | 2020 |
| Somma AS | Wholesale & retail | 2022 |
| Sonando AS | Information & communication | 2025 |
| Sonny Andersson | Professional & scientific | 2011 |
| Sophia Brand Jewellery AS | Manufacturing | 2015 |
| Sospita AS | Real estate | 1995 |
| Southvalley AS | Information & communication | 2025 |
| Sp-Bygg AS | Construction | 2025 |
| Spaniahjem AS | Real estate | 2005 |
| Splash Ans | Administrative & support | 2008 |