| L-Tek A/S | 8961 | Allingåbro |
| L.M. Stålindustri A/S | 8920 | Randers NV |
| La Cour & Faber A/S | 4000 | Roskilde |
| LA-Production ApS | 3250 | Gilleleje |
| Lambaek A/S | 6940 | Lem St |
| Lambæks Fjederfabrik A/S | 8600 | Silkeborg |
| Larko Magnet International A/S | 2740 | Skovlunde |
| Lars Broe Rustfri stål A/S | 5220 | Odense SØ |
| Leasing Fyn | 5250 | Odense SV |
| Lemvigh-Müller A/S | 2730 | Herlev |
| Lim-Tech ApS | 7120 | Vejle Øst |
| LINATECH A/S | 8620 | Kjellerup |
| LINDLARSEN A/S | 7400 | Herning |
| Linimatic A/S | 3200 | Helsinge |
| Liqflow A/S | 7100 | Vejle |
| LJ Maskinteknik A/S | 6040 | Egtved |
| LNT A/S | 6700 | Esbjerg |
| LOGSTOR Denmark Holding ApS | 9670 | Løgstør |
| Lomac A/S | 5330 | Munkebo |
| LP Kolding A/S | 6000 | Kolding |
| lpm production a/s | 6870 | Ølgod |
| LSM Pumper ApS | 9760 | Vrå |
| Luupo ApS | 8464 | Galten |
| LV Teknik ApS | 5492 | Vissenbjerg |
| Løsning Maskinfabrik A/S | 8723 | Løsning |
| LØWENER Industri ApS | 2600 | Glostrup |