| S.E. Hovedgaard A/S | 8732 | Hovedgård |
| Saferoad Services A/S | 4600 | Køge |
| Saint-Gobain Abrasives A/S | 2630 | Taastrup |
| Saint-Gobain Denmark A/S, Isover | 6580 | Vamdrup |
| Saint-Gobain Ecophon A/S | 2650 | Hvidovre |
| Saniflow ApS | 4241 | Vemmelev |
| Scanboiler Varmeteknik | 8600 | Silkeborg |
| SCANGRIP A/S | 5700 | Svendborg |
| Scantron A/S | 5000 | Odense C |
| Scantruck A/S | 7800 | Skive |
| Schneider Electric Danmark A/S | 2750 | Ballerup |
| Sesam Mobile Væg Systemer A/S | 2670 | Greve |
| SICK A/S | 3500 | Værløse |
| Signmax AB | 438 91 | Landvetter |
| Simonsen co | 8000 | Aarhus |
| Simpson Strong-Tie A/S | 8300 | Odder |
| Skelmose ApS | 6740 | Bramming |
| Skou Gruppen A/S | 2970 | Hørsholm |
| Slejpner Maskiner A/S | 2820 | Gentofte |
| SmartGuard ApS | 3550 | Slangerup |
| SMVdanmark | 2300 | København S |
| SNA EUROPE (DENMARK) A/S | 2605 | Brøndby |
| Snedkernes Uddannelser | 2400 | København NV |
| Södra Wood A/S | 3400 | Hillerød |
| Solutionweb ApS - |Apps|Tracking|Web Kodning| | 2820 | Gentofte |
| Sonnimax A/S | 5500 | Middelfart |
| SorptionShade A/S | 2610 | Rødovre |
| Spirax Sarco Ltd. | 3460 | Birkerød |
| Stålet.dk | 4700 | Næstved |
| Stennevad | 6715 | Esbjerg N |
| Stiholt A/S | 9300 | Sæby |
| Stonewalk as | 8740 | Brædstrup |
| Summit Electronics ApS | 2650 | Hvidovre |
| Sundolitt A/S | 7190 | Billund |