| Sensemaking data AB | Borensberg | 0 tkr |
| Sensolato AB | Linköping | 0 tkr |
| SENZ8 Holding AB | Linköping | 0 tkr |
| Senzum IT Services AB | Linköping | 0 tkr |
| Seppep AB | Valdemarsvik | 0 tkr |
| SE Projekt & Design AB | Linköping | 0 tkr |
| Septentriones AB | Ödeshög | 0 tkr |
| SeranaRX AB | Finspång | 0 tkr |
| Serieentreprenörshögskolan Investment Fond 01 AB | Söderköping | 0 tkr |
| Serieentreprenörshögskolan Investment Fond 02 AB | Söderköping | 0 tkr |
| ServiQ connected AB | Linköping | 0 tkr |
| S Eskilsson Förvaltning AB | Rimforsa | 0 tkr |
| Seven Seabirds AB | Motala | 0 tkr |
| Sevims Bodyline AB | Norrköping | 0 tkr |
| SF Holding i Vadstena AB | Vadstena | 0 tkr |
| SG DANCE SWEDEN AB | Linköping | 0 tkr |
| SG Ekonomilotsen AB | Norrköping | 0 tkr |
| SG Winterberg AB | Norrköping | 0 tkr |
| Shahana Grill & Kök AB | Göteborg | 0 tkr |
| Shakiba Holding AB | Vikingstad | 0 tkr |
| Shannon AB | Linköping | 0 tkr |
| Shape & Fitness Linköping AB | Linköping | 0 tkr |
| SH Assistans AB | Motala | 0 tkr |
| Sheva Holding AB | Mjölby | 0 tkr |
| Shimons AB | Norrköping | 0 tkr |
| SHREK Invest AB | Norrköping | 0 tkr |
| SHR Förvaltning i Östergötland AB | Vadstena | 0 tkr |
| Sidereum Holding AB | Ljungsbro | 0 tkr |
| Sidus Bygg & Projekt AB | Norrköping | 0 tkr |
| SigFra Holding AB | Åtvidaberg | 0 tkr |
| Signömalö AB | Mjölby | 0 tkr |
| Signostium AB | Lidingö | 0 tkr |
| Sigrid & Lilly AB | Linköping | 0 tkr |
| Silamax AB | Norrköping | 0 tkr |
| Silema Investment AB | Norrköping | 0 tkr |
| Sillklabben Invest AB | Norrköping | 0 tkr |
| Silverbay Holding AB | Linköping | 0 tkr |
| Silver edge AB | Norrköping | 0 tkr |
| Silverhällen AB | Norrköping | 0 tkr |
| Silvervarvet AB | Linköping | 0 tkr |
| Silvia AB | Vadstena | 0 tkr |
| Silvia Ayoub Holding AB | Linköping | 0 tkr |
| Simba SYS AB | Norrköping | 0 tkr |
| Simmons Med.konsult Aktiebolag | Norrköping | 0 tkr |
| Simon & Hanna Restaurang AB | Norrköping | 0 tkr |
| Simon Wannes AB | Linköping | 0 tkr |
| Simplethebest i Stockholm AB | Hässelby | 0 tkr |
| Simtech Europe AB | Finspång | 0 tkr |
| Sinact AB | Stockholm | 0 tkr |
| Sindri Production AB | Linköping | 0 tkr |