| SDIN Holding AB | Sundsvall | 0 tkr |
| Seasite Engineering AB | Sundsvall | 0 tkr |
| Secessu AB | Sundsvall | 0 tkr |
| Sedes Invest AB | Sundsvall | 0 tkr |
| Seen in a Dream Entertainment AB | Alnö | 0 tkr |
| Selånger-Lidens Transport & Logistik AB | Sundsvall | 0 tkr |
| Selångers Lastmaskinsuthyrning Aktiebolag | Sundsvall | 0 tkr |
| Selångers Mark & Stängsel Aktiebolag | Sundsvall | 0 tkr |
| SELDER & COMPANY HOLDING AB | Uppsala | 0 tkr |
| Sellia AB | Sundsvall | 0 tkr |
| Sendelbach Förvaltning AB | Sundsvall | 0 tkr |
| SEWOJ AB | Sundsvall | 0 tkr |
| SFA Medical AB | Uppsala | 0 tkr |
| Shaperzon AB | Njurunda | 0 tkr |
| SideQuest Sweden AB | Sundsvall | 0 tkr |
| Sidsjöhöjden 13 Fastigheter AB | Sundsvall | 0 tkr |
| Sidsjö HVB i Sundsvall AB | Sundsvall | 0 tkr |
| Sigmund Sundelin AB | Sundsvall | 0 tkr |
| Signalbrus AB | Sundsvall | 0 tkr |
| Signe i Sundsvall AB | Alnö | 0 tkr |
| Silfver Consulting AB | Sundsvall | 0 tkr |
| Silkesord AB | Enånger | 0 tkr |
| silk.nu Sundsvall AB | Alnö | 0 tkr |
| SINAB Sundsvall AB | Alnö | 0 tkr |
| Sintornado AB | Täby | 0 tkr |
| Sjöfast Holding AB | Sundsvall | 0 tkr |
| Skälarö Consulting AB | Sundsvall | 0 tkr |
| Skålguldet AB | Sundsvall | 0 tkr |
| Skatahöjden Invest AB | Norrköping | 0 tkr |
| Skatudden Invest AB | Kvissleby | 0 tkr |
| Skinnåsen Förvaltning Aktiebolag | Timrå | 0 tkr |
| Skogsrenen AB | Sundsbruk | 0 tkr |
| Skogvaktaren 3 AB | Sundsvall | 0 tkr |
| Skottsunds Fastighet AB | Kvissleby | 0 tkr |
| Släda Consulting AB | Ankarsvik | 0 tkr |
| SLP Alpha Holding AB | Sundsvall | 0 tkr |
| Sluggo Holdingbolag AB | Sundsvall | 0 tkr |
| Småholmarna 1 AB | Sundsvall | 0 tkr |
| Småholmarna Invest AB | Sundsvall | 0 tkr |
| S Malm Invest AB | Ankarsvik | 0 tkr |
| Snårkullen AB | Njurunda | 0 tkr |
| Snel hest in Väst AB | Vaxholm | 0 tkr |
| Snöbollen Holding AB | Kvissleby | 0 tkr |
| Snögropen Aktiebolag | Sundsvall | 0 tkr |
| Snossnoj AB | Sundsvall | 0 tkr |
| Snowflake AB | Sundsvall | 0 tkr |
| Social Technical Service Sweden AB | Sundsvall | 0 tkr |
| Söderåsen 1 AB | Stöde | 0 tkr |
| Södermalm 1:73 AB | Kvissleby | 0 tkr |
| Södra Järn AB | Sundsvall | 0 tkr |