| G.A. Hansen A/S | 2730 | Herlev |
| Galvanotek A/S | 8850 | Bjerringbro |
| Gantech A/S | 6760 | Ribe |
| Gemü ApS | 2750 | Ballerup |
| Genpack A/S | 3520 | Farum |
| Gibo Plast A/S | 6900 | Skjern |
| GIBOTECH A/S | 5220 | Odense SØ |
| GIPO Sp. z o.o. | 75-211 | Koszalin |
| Give Steel A/S | 7330 | Brande |
| GK Trådgnist ApS | 6920 | Videbæk |
| Global AGV® | 7900 | Nykøbing Mors |
| GMF A/S | 5591 | Gelsted |
| Gottfred Petersen A/S | 5000 | Middelfart |
| Granly Steel A/S | 6700 | Esbjerg |
| Granzow A/S | 2600 | Glostrup |
| Gravlund Industrigummi A/S | 2750 | Ballerup |
| GreenMatic A/S | 2770 | Kastrup |
| Gromas Maskinfabrik A/S | 8220 | Brabrand |
| Grumsens Maskinfabrik A/S | 6700 | Esbjerg |
| Grønbech & Sønner A/S | 2450 | Skovlunde |
| GS Crane & Equipment | 6700 | Esbjerg |
| GS-Hydro Danmark A/S | 6000 | Kolding |
| Gühring ApS | 6040 | Egtved |
| Gustav Østergaards Maskinfabrik A/S | 7171 | Uldum |
| Gladsaxe Metalsliberi ApS | 2860 | Søborg |
| GPV Group A/S | 7100 | Vejle |
| Grenaa Motorfabrik A/S | 8500 | Grenaa |