 | KVITVANG FJELLSPRENGNING AS | 912208451 | LEVANGER |
| K. VOLDEN AS | 931848674 | FITJAR |
| KW-BYGG HORNNES AS | 984620586 | EVJE OG HORNNES |
| KYDLAND MASKIN AS | 923384448 | KLEPP |
| KYLLO MASKIN AS | 844434782 | SELBU |
| KYMAR SECTECH AS | 918537724 | TRONDHEIM |
| KYST BYGG AS | 979393776 | ØRLAND |
| KYSTBYGG AS | 982726980 | EIGERSUND |
| KYST ELEKTRO AS | 820933362 | FRØYA |
| KYSTEN UTVIKLING AS | 917392463 | KRISTIANSAND |
| KYST OG SJØSERVICE AS | 992293934 | FÆRDER |
| KYSTPLAN AS | 990958246 | HITRA |
| KZ BYGG AS | 913754050 | LØRENSKOG |
| L2 ARKITEKTER AS | 943273553 | OSLO |
| LAA MASKIN AS | 923417303 | ÅL |
| LAB 4 PROSJEKTERING AS | 960990072 | TRYSIL |
| LAB ENTREPRENØR AS | 995802392 | BERGEN |
| LA-BIM AS | 913464613 | SOGNDAL |
| LAFTEKOMPANIET AS | 982212308 | ØSTRE TOTEN |
| LAG ENTREPRENØR AS | 986798676 | VERDAL |
| LAHAUG AS | 918831398 | LILLESTRØM |
| LAJE AS | 920465536 | RINGERIKE |
| L A KASIN MASKINENTREPENØR | 984588356 | NOTODDEN |
| LAKSEVÅG BYGG AS | 927074389 | BERGEN |
| LAKSEVÅG RØR & SANITÆR AS | 934268598 | BERGEN |
| LALA TØYEN AS | 894984872 | OSLO |
| LAND ANLEGGSDRIFT AS | 856927482 | NORDRE LAND |
| LAND ANLEGGSGARTNER AS | 993862908 | NORDRE LAND |
| LANDARK AS | 995672588 | LEIRFJORD |
| LANDÅS PRODUKTER AS | 912245489 | BERGEN |
| LANDBRUKS-BYGG AS | 889974672 | ØRSTA |
| LAND BYGGSERVICE AS | 921403712 | NORDRE LAND |
| LANDHEIM AS | 964464189 | ØSTRE TOTEN |
| LANDHEIM BYGG AS | 997066065 | ØSTRE TOTEN |
| LANDMÅLER RUUD AS | 988683671 | INDRE ØSTFOLD |
| LANDMÅLER SØR AS | 984361386 | KRISTIANSAND |
| LANDMARK MASKIN AS | 978667732 | BØMLO |
| LAND OG STRAND AS | 991440828 | GJØVIK |
| LANDRO ELEKTRO AS | 980377385 | ØYGARDEN |
| LANDRO MASKIN AS | 920987729 | ØYGARDEN |
| LANDS AS | 998904013 | ÅLESUND |
| LANDSBYARKITEKTENE AS | 984035535 | BÆRUM |
| LANDSKAPERIET AS | 997152700 | OSLO |
| LANDSKAPSENTREPRENØREN AS | 922021694 | SKIEN |
| LANDSKAPSENTREPRENØRENE AS | 939225455 | KRISTIANSAND |
| LANDSKAPSKOLLEKTIVET AS | 921330928 | SANDEFJORD |
| LANDSKAPSMESTEREN AS | 925923257 | OSLO |
| LANDSNES BYGG AS | 991443487 | STAVANGER |
| LANDSTAD MASKIN AS | 919146389 | SOLA |
| LANGEMYHR AS | 911842653 | TØNSBERG |