| Acobia | |
| Acorai | |
| ACP Systems AB | |
| ACQ Bure AB | |
| Actic Sverige | |
| Actionpoint Consulting AB | |
| Active Biotech AB | |
| Active Brands Group Scandinavia AB | |
| Active Telecom AB | Stockholm |
| AcuCort AB | |
| Acuinor AB | |
| ADACA Authority AB | |
| Adam Dunkels | Stockholm |
| AdamantQ | |
| Adamello AB | |
| AdaNet Göteborg AB | Västra Götaland |
| ADB-UTVECKLING AB | Stockholm |
| AddBIO AB | |
| Addit Sales Support AB | |
| Additude AB | |
| AddPro AB | Skåne |
| Addressya AB | |
| AddSecure SE | |
| Addsystems International AB | |
| Addtech AB | |
| Adfenix | Västra Götaland |
| Admax Hosting AB | Stockholm |
| Admera Software AB | Stockholm |
| ADNAVEM AB | |
| Adnavem AB | |
| Adoveo AB | |
| Adrigo Asset Management | |
| Adsorbi | |
| Adtraction | |
| Advance Commerce | |
| Advanced Mechanical Engineering AB | |
| Advenica AB | |
| Adventrum AB | |
| Adverty AB | |
| Adway | |
| Adwise | Västra Götaland |
| AEC | Stockholm |
| Aerit | |
| Afa Försäkring | |
| Affibody Medical AB | |
| Again Technology AB | |
| Agentum | |
| Agical | |
| Agila | |
| Agile Molecule | Stockholm |