| Navn | Postnummer | By |
|---|---|---|
| A/S Dansk Anodiserings Industri | 7700 | Thisted |
| A/S Einar Risør. Finerhandel | 7100 | Vejle |
| A/S J. Petersens Beslagfabrik | 9240 | Nibe |
| Aabling A/S | 7100 | Vejle |
| AAG | Aalborg Gummivarefabrik A/S | 9400 | Nørresundby |
| Aagaard A/S | 9560 | Hadsund |
| AB Inventech A/S | 7430 | Ikast |
| acadon AG | 47809 | Krefeld |
| Acies ApS | 8600 | Silkeborg |
| Airtec A/S | 7620 | Lemvig |
| Akzo Nobel Industrial Coatings A/S | 7430 | Ikast |
| Alpha Brush ApS | 8450 | Hammel |
| ALPHA Containers A/S | 8000 | Aarhus C |
| Annoncørbetalt indhold | 9220 | Aalborg Ø |
| Aubo Production A/S | 7490 | Aulum |
| Auktionshuset dab A/S | 8361 | Hasselager |