| Addifab ApS | |
| Adena IT ApS | |
| AdForm | |
| Adhost ApS | |
| AdMad Hosting ApS | Capital Region of Denmark |
| Adobe Denmark | Capital Region of Denmark |
| Adtention | |
| Advansor A/S | |
| Advansor A/S | |
| Advice Digital | Capital Region of Denmark |
| Advicecom Distribution ApS | Capital Region of Denmark |
| Advicer | Central Denmark Region |
| Aeconsult | Region of Southern Denmark |
| AeroConsult ApS | |
| AeroGuest ApS | |
| AFYX | |
| AFYX Therapeutics | |
| Again | |
| Ageras | |
| Agil Udvikling A/S | Central Denmark Region |
| Agner Fog, Ph.D. | Capital Region of Denmark |
| Agreena ApS | |
| Agro Intelligence ApS | |
| AH Consult ApS | |
| AH Diagnostics A/S | |
| Aida Oncology ApS | |
| Aida Oncology ApS | |
| Aiia | Capital Region of Denmark |
| Air Support A/S | Region of Southern Denmark |
| Airtame, Inc. | |
| AJ Vaccines A/S | |
| AK Techotel | Capital Region of Denmark |
| AK7-IT | |
| Alba-Computing ApS | |
| Alcensoft A/S | |
| Alencastre.net | Capital Region of Denmark |
| Alexandra Instituttet A/S | |
| Algiecel ApS | |
| Alia | Capital Region of Denmark |
| Aliviate | |
| ALK-Abelló A/S | |
| All Gravy ApS | |
| Alm. Brand | |
| Alpcon A/S | |
| Alpha Kurser ApS | Region of Southern Denmark |
| Alpha-elektronik A/S | Region Zealand |
| Alphalyse A/S | |
| Alphasite | North Jutland Region |
| Alt om DATA | Capital Region of Denmark |
| AlteroDesign | Capital Region of Denmark |