| Sequel AS | Information & communication | 2021 |
| Service I Sør AS | Wholesale & retail | 2011 |
| Servicepartner Søgne AS | Administrative & support | 1993 |
| Servicesnekker AS | Construction | 2021 |
| Severinsen Eiendom AS | Real estate | 2016 |
| Severinsen Forvaltning AS | Real estate | 2023 |
| SGS Services AS | Construction | 2015 |
| SH Næring AS | Real estate | 2024 |
| Sheik AS | Agriculture & fishing | 2004 |
| Sia Holding AS | Construction | 2000 |
| Sias Holding AS | Real estate | 2007 |
| Sicada Holding AS | | 2018 |
| Sigvar Skeie Holding AS | Real estate | 2005 |
| Sij Holding AS | | 2020 |
| Silver Renhold AS | Administrative & support | 2021 |
| Sim Teknikk AS | Professional & scientific | 2023 |
| Sindrek Invest AS | | 2025 |
| Siren Å Invest AS | Real estate | 2021 |
| Siri Hjelpen AS | Administrative & support | 2022 |
| Sirkus Dahl AS | | 2022 |
| Siv Merete Finstad Holding AS | | 2020 |
| Sjøfrakt Sør AS | Transport & logistics | 2010 |
| Sjøliv Langenes Da | Agriculture & fishing | 2017 |
| SK Kjøkkenfornying AS | Professional & scientific | 2017 |
| SK Prosjekt AS | Construction | 2025 |
| Skagen Høllen AS | Hospitality | 2025 |
| Skarpeid Holding AS | | 2024 |
| Skarveien Veilag SA | Real estate | 2015 |
| Skeie Skog & Utleie AS | Agriculture & fishing | 2018 |
| Skeivoll Og Hoem Eiendom AS | Real estate | 2022 |
| Skjeberg Betongpumping AS | Transport & logistics | 1992 |
| Skjekkeland Øyelegepraksis AS | Health & social care | 2010 |
| Skobutikken Hæla I Taket AS | Wholesale & retail | 2001 |
| Skogliparken AS | Real estate | 2011 |
| SKOGSENTREPENØRER EIK & TØNNESSEN ANS Glenn Eik | Agriculture & fishing | 1988 |
| Skudeneset Gaard AS | Hospitality | 2012 |
| Skytterveien AS | Real estate | 2024 |
| Smartbygg Søgne AS | Construction | 2022 |
| Smith Blikk Og Ventilasjon AS | Construction | 2016 |
| Snap Sock AS | Manufacturing | 2004 |
| Sol Åsen AS | Real estate | 2019 |
| Solkongen AS | Wholesale & retail | 2020 |
| Solvik Hytteutleie AS | Hospitality | 2024 |
| Songvaar Consulting AS | Education | 2023 |
| Songvaar Vekst AS | Health & social care | 1992 |
| Sorensen AS | | 2024 |
| Sorensen Lab AS | Wholesale & retail | 2025 |
| Sortland Bygg & Anlegg AS | Construction | 2018 |
| Sousa Holding AS | Administrative & support | 2018 |
| SP People AS | Professional & scientific | 2016 |
| Spesial Nord Da | Information & communication | 2009 |
| Spesial Teknikk AS | Manufacturing | 2013 |
| Spiren Barnehage Søgne 2 AS | Education | 2020 |
| Spiren Barnehage Søgne AS | Education | 2007 |
| Splitt Profil Byggesystemer AS | Manufacturing | 2003 |
| Sportsfabrikken AS | Wholesale & retail | 2018 |
| Sporty Søgne AS | Arts & recreation | 2025 |
| Sprudle Frisør Da | Other services | 2020 |
| Sprudlefestivalen AS | Arts & recreation | 2022 |
| Square One Trading AS | Wholesale & retail | 2003 |
| Stabel Eiendomsutvikling AS | Real estate | 2006 |
| Stage Event AS | Administrative & support | 2020 |
| Standard Wear Holding AS | Wholesale & retail | 2020 |
| Standard Workwear AS | Wholesale & retail | 2020 |
| Stedal AS | Real estate | 2018 |
| Steffen Aamodt AS | | 2021 |
| Steinar Aamodt Holding AS | Financial services | 2018 |
| Stemmane 1308 AS | Real estate | 2007 |
| Sterk Holding AS | | 2005 |
| Sterk Og Frisk AS | Arts & recreation | 2023 |
| Stian Aamodt AS | Construction | 2023 |
| Stillasfag Utleie AS | Administrative & support | 2022 |
| Stokkelandsåsen Familiebarnehage AS | Education | 2016 |
| Stolmen Holding AS | | 2023 |
| Storhei Invest AS | | 2018 |
| STRONG2GETHER AS | Education | 2023 |
| Strømmehaven Gladmat AS | Wholesale & retail | 2020 |
| Stubstad Anlegg AS | Construction | 2007 |
| Stubstad Betong AS | Construction | 2021 |
| Stubstad Eiendom AS | Real estate | 2026 |
| Stubstad Holding AS | | 2023 |
| Sukkevannslia AS | Real estate | 2019 |
| Sunne Leker AS | Wholesale & retail | 2023 |
| Suntrip Norway AS | Real estate | 2016 |
| Svein & Stines Grill & Isbar Ans | Hospitality | 1993 |
| SVT Sprøytebetong AS | Construction | 2023 |
| SVV 2 AS | Real estate | 2021 |
| Syd Elektro AS | Construction | 2024 |
| Syd Næringseiendom AS | Real estate | 2026 |
| Sydinga 75 AS | Real estate | 2022 |
| Sydinga 77 AS | Real estate | 2022 |
| Sydstrand Holding AS | Real estate | 2005 |
| Synsopplevelser Søgne AS | Wholesale & retail | 2002 |
| Sætersdalen Forvaltning AS | Real estate | 2022 |
| Sögne Home AS | Wholesale & retail | 2021 |
| Sögne Home Holding AS | Wholesale & retail | 2021 |
| Søgne Active AS | Arts & recreation | 2010 |
| Søgne Autolakkering Ans | Other services | 1988 |
| Søgne Bil AS | Other services | 1994 |
| Søgne Bilservice AS | Wholesale & retail | 2001 |