 | JØDAHL ENTREPRENØR AS | 971201916 | LILLESTRØM |
| JØDAHL TAKST OG BYGG AS | 927027003 | ULLENSAKER |
| JOHAN BREKKA ENTREPRENØRFIRMA AS | 951067660 | KRAGERØ |
| JOHAN EEK-LARSEN AS | 925786470 | BERGEN |
| JOHANNESSEN AS | 922636761 | TRONDHEIM |
| JOHANNESSEN OG HAGEN AS | 976203453 | TRONDHEIM |
| JOHANSEN BAD OG RØRSERVICE AS | 990718245 | OSLO |
| JOHANSEN BYGG & EIENDOM AS | 923143629 | FROGN |
| JOHANSEN BYGG & REHABILITERING AS | 917886679 | TRONDHEIM |
| JOHANSEN MASKIN AS | 986016074 | HEMNES |
| JOHANSEN RØR AS | 926590588 | ETNE |
| JOHANSEN RØRLEGGERSERVICE AS | 997082680 | VESTVÅGØY |
| JOHANSEN RØR OG ANLEGG | 826793082 | STANGE |
| JOHANSEN VVS AS | 979212445 | OSLO |
| JOHANSSON BYGG SERVICE | 929508319 | BERGEN |
| JOHAN WESTLIE & SØNNER AS | 955663578 | MARKER |
| JOHN ANDREASSEN | 992957344 | HJARTDAL |
| JOHN DYRUD MASKIN | 977490863 | VESTRE TOTEN |
| JOHN FADUM AS | 911557622 | TØNSBERG |
| JOHN GALTEN AS | 983792324 | ÅMOT |
| JOHN GJERNES | 970554092 | RISØR |
| JOHN HAGEN AS | 915611133 | PORSGRUNN |
| JOHN HOLVIK AS | 978678882 | SUNNFJORD |
| JOHN JOHNSEN AS | 998131111 | ÅMOT |
| JOHN KILDAL & SØNNER AS | 886846142 | MELØY |
| JOHN KLEVELAND AS | 924536403 | SKIEN |
| JOHN LIEN RØRLEGGERBEDRIFT AS | 934092090 | RINGEBU |
| JOHN MAGNE RIKOLL TØMRERMESTER | 888625402 | GRAN |
| JOHN MARTINSEN BYGG AS | 981882288 | HADSEL |
| JOHN MIKALSEN | 975857786 | VEFSN |
| JOHNNY HAREIDE | 970059504 | ÅLESUND |
| JOHNNY JENSEN AS | 941441769 | KRAGERØ |
| JOHNNY LARSEN AS | 974484684 | VEFSN |
| JOHN RUNAR MYDLAND | 922240345 | SOKNDAL |
| JOHN SAGMO AS | 982437636 | NAMSSKOGAN |
| JOHNSEN & ENGER HOLDING AS | 922641862 | ØVRE EIKER |
| JOHNSEN ENTREPRENØR AS | 994593161 | BÆRUM |
| JOHNSEN GLASS VINDUSFABRIKK AS | 985195455 | ØYGARDEN |
| JOHNSEN RØRSERVICE AS | 918446370 | BERGEN |
| JOHN'S MUR OG GRAVESERVICE AS | 983779247 | NES |
| JOHNSON CONTROLS NORWAY AS | 940729092 | OSLO |
| JOHNSRUD ANLEGGSDRIFT AS | 993946206 | DRAMMEN |
| JOHS E ØVSTHUS AS | 979502486 | VOSS |
| JOHS J SYLTERN AS | 816510872 | ÅFJORD |
| JOHS. RØGELSTAD MASKIN AS | 990337896 | ETNE |
| JOHS SÆLEN & SØNN AS | 856409252 | BJØRNAFJORDEN |
| JOKERHUS BYGG AS | 974988577 | STAVANGER |
| JØLLE & KRISTENSEN AS | 916872860 | TRONDHEIM |
| JØLSTAD MASKIN AS | 929228251 | NESODDEN |
| JØLSTER BYGG OG INTERIØR AS | 933532496 | SUNNFJORD |