| K.S. Smede og Montage A/S | 2630 | Taastrup |
| K.S.M. Kragelund A/S | 8723 | Løsning |
| Kaeser Kompressorer A/S | 2690 | Karlslunde |
| Kapema A/S | 7700 | Thisted |
| Kardex Danmark A/S | 5220 | Odense SØ |
| KB Hanssons Metalstøberi ApS | 9600 | Aars |
| kd marketing support | 7000 | Fredericia |
| Keca A/S | 4100 | Ringsted |
| Kellpo A/S | 7700 | Thisted |
| Kemppi A/S | 2740 | Skovlunde |
| KH Maskinfabrik | 3700 | Rønne |
| KH-Technic ApS | 2670 | Greve |
| Kilde Automation | 7800 | Skive |
| Kistler Nordic DK | 4681 | Herfølge |
| KJV A/S | 5220 | Odense SØ |
| KK Metal P/S | 7752 | Snedsted |
| Klaravik Netauktion | 4340 | Tølløse |
| Klimablock Herning ApS | 7400 | Herning |
| KLINGER Danmark A/S | 2605 | Brøndby |
| KLINGSPOR A/S | 6000 | Kolding |
| Klüber Lubrication Nordic A/S | 2740 | Skovlunde |
| KM Vandskæring ApS | 9400 | Nørresundby |
| KN Machinery ApS | 8600 | Silkeborg |
| Knud Gade A/S | 7100 | Vejle |
| Konecranes Denmark A/S | 2630 | Taastrup |
| Koppenbjerg Emballage A/S | 5683 | Haarby |
| Körber Supply Chain DK A/S | 9510 | Arden |
| Kristiansen & Co ApS | 9560 | Hadsund |
| Krøll Cranes A/S | 3540 | Lynge |
| KS Gruppen A/S | 9220 | Aalborg Ø |
| KSN Industri A/S | 8850 | Bjerringbro |
| KT Stålindustri A/S | 3550 | Slangerup |
| KTR Systems Danmark ApS | 8600 | Silkeborg |
| KUKA Nordic AB | 8600 | Silkeborg |
| KUNI Maskinfabrik A/S | 8600 | Silkeborg |
| Kyocera Unimerco Tooling A/S | 7451 | Sunds |