| Hans Buch A/S | 2620 | Albertslund |
| Hans Schourup A/S | 8310 | Tranbjerg |
| HBO Solutions ApS | 2200 | København N |
| HCS A/S Transport & Spedition | 2600 | Glostrup |
| Helmuth A. Jensen A/S | 2610 | Rødovre |
| Hentechsolution ApS | 2670 | Greve |
| HiFlux Filtration A/S | 8722 | Hedensted |
| Hirtshals El-Motorservice ApS | 9850 | Hirtshals |
| HJ Rustfri Stål ApS | 9220 | Aalborg Øst |
| HM Systems A/S | 6100 | Haderslev |
| HN Group A/S | 7190 | Billund |
| HNC Group A/S | 4241 | Vemmelev |
| Hobro Laserteknik A/S | 9500 | Hobro |
| Hobro Rustfri Procesteknik A/S | 9500 | Hobro |
| Hoffmann Group | 28832 | Achim |
| Holtec Automatic A/S | 6715 | Esbjerg N |
| HSØ ApS | 9320 | Hjallerup |
| HumanTrust A/S | 8381 | Tilst, Aarhus |
| HYTOR A/S | 6705 | Esbjerg Ø |
| Højer Pølser A/S | 6280 | Højer |