| A-Supply A/S | 9990 | Skagen |
| A/S J. Petersens Beslagfabrik | 9240 | Nibe |
| A/S Julius Nielsen & Søn | 2610 | Rødovre |
| A/S Løgstrup Steel | 3490 | Kvistgård |
| AAG | Aalborg Gummivarefabrik A/S | 9400 | Nørresundby |
| Aalborg Portland A/S | 9100 | Aalborg |
| Aarhus Cementvarefabrik A/S | 8520 | Lystrup |
| ABB A/S | 5500 | Middelfart |
| ABC Pavilloner A/S | 7442 | Engesvang |
| ABCliner - ABC rørteknik ApS | 7080 | Børkop |
| Acies ApS | 8600 | Silkeborg |
| ACO Nordic A/S | 4100 | Ringsted |
| Acomplir ApS | 7100 | Vejle |
| ACTEC A/S | 8940 | Randers SV |
| Adserballe & Knudsen A/S | 3520 | Farum |
| AFRY | 7400 | Herning |
| Ahlsell Danmark | 2625 | Vallensbæk |
| Aircold Køleanlæg | 9210 | Aalborg SØ |
| Airtec A/S | 7620 | Lemvig |
| Ajcon Entreprenør- og Ingeniørfirma A/S | 7100 | Vejle |
| Akzo Nobel Industrial Coatings A/S | 7430 | Ikast |
| Alcadon ApS | 2990 | Nivå |
| Alfix A/S | 6000 | Kolding |
| Algeco Denmark A/S | 4100 | Ringsted |
| All Remove Danmark A/S | 2600 | Glostrup |
| ALPHA Containers A/S | 8000 | Aarhus C |
| Alticar ApS | 4622 | Havdrup |
| Altiflex ApS | 2650 | Hvidovre |
| Alumentdk | 6000 | Kolding |
| Alux A/S | 8600 | Silkeborg |
| Ambercon A/S | 9530 | Støvring |
| Amstrup Skilte ApS | 7000 | Fredericia |
| Andreasen & Hvidberg A/S | 9230 | Svenstrup J |
| Angle.Design ApS | 4673 | Rødvig Stevns |
| Anlægsgartner Gottlieb A/S | 4050 | Skibby |
| Annoncørbetalt indhold | 9220 | Aalborg Ø |
| Anticimex A/S | 2635 | Ishøj |
| Anton Knudsen Egtved A/S | 6040 | Egtved |
| Anzet A/S | 4700 | Næstved |
| ap facader a/s | 9700 | Brønderslev |
| Areco Profiles A/S | 9575 | Terndrup |
| Areco Projekt | 9530 | Støvring |
| Areo A/S | 8883 | Gjern |
| ARKAS A/S | 8763 | Rask Mølle |
| Arm-Tec Steelsupport A/S | 5792 | Årslev |
| Armadan A/S | 2750 | Ballerup |
| Armatec A/S | 2600 | Glostrup |
| Aros Maler Entreprise A/S | 8541 | Skødstrup |
| ASSA ABLOY Opening Solutions A/S | 2750 | Ballerup |
| athome apartments ApS | 8200 | Aarhus N |
| Auktionshuset dab A/S | 8361 | Hasselager |
| Autocentralen.com Vejle A/S | 7100 | Vejle |
| AutoLock | 5462 | Morud |
| AVANT Danmark | 8670 | Låsby |
| Avery Nordic | 4600 | Køge |
| Avidenz A/S | 5250 | Odense SV |
| AVK Danmark A/S | 8464 | Galten |
| AVN Gruppen | 2605 | Brøndby |