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| Siemens (5) | Skype (21) |
| Smilehouse (5) | Software and Predictive Analytics (5) |
| Sogeti Finland Oy (18) | SOK (5) |
| Sokotel Oy (5) | SRV (7) |
| Stockmann (12) | Stora Enso Group (28) |
| STX Finland Cruise (6) | Summa Health System (8) |
| Suomen Laatutakuu Palvelut Oy (12) | SW-Development Oy (6) |