 | ODAL ANLEGGSDRIFT AS | 932475057 | NORD-ODAL |
 | ODAL BYGG AS | 931933795 | SØR-ODAL |
 | ODAL ENTREPRENØR AS | 994449826 | SØR-ODAL |
 | O D BYGG AS | 924661399 | HØYANGER |
 | ODD ARNE AARSTAD | 977105579 | KONGSVINGER |
 | ODD BARTHO-HANSEN & SØNNER AS | 955499697 | FÆRDER |
 | ODD BJERKEVOLL AS | 942654723 | VESTNES |
 | ODD EINAR KNE AS | 974904535 | STEINKJER |
 | ODD ERLING LØVØY | 968174835 | HERØY (MØRE OG ROMSDAL) |
 | ODD FARMEN AS | 925415693 | LARVIK |
 | ODD HAGERUD AS | 976018192 | EIDSKOG |
 | ODD HEIBERG AS | 984556128 | HORTEN |
 | ODDMUND GROVEN AS | 923627804 | ØRLAND |
 | Odd-Petter Hosen AS | 947714821 | ÅFJORD |
 | ODD SMÅGE AS | 954505170 | AUKRA |
 | ODD STENSVOLD AS | 995680084 | LARVIK |
 | ODDVAR MELING AS | 980151794 | STAVANGER |
 | ODDVAR NYBROT AUTORISERT RØRLEGGERFIRMA | 930232882 | BJØRNAFJORDEN |
 | ODDVAR ØYGARD AS | 985793581 | ÅL |
 | ØDEGAARD ANLEGG AS | 992170905 | BRØNNØY |
 | ØDEGAARD OG STERTEN AS | 997907116 | BÆRUM |
 | ØDEGÅRD BYGG OG MASKIN AS | 919232773 | LUSTER |
 | ØDEGÅRDENS PLANTESKOLE OG UTEMILJØ AS | 983136613 | GRIMSTAD |
 | ODIN BRANNTEKNIKK AS | 922957398 | OSLO |
 | ODIN BYGG AS | 982592992 | BERGEN |
 | ODLAND AS | 914419700 | HÅ |
 | O DRAGE ENTREPRENØR AS | 963505329 | SUNNFJORD |
 | OEG TEGNEKONTOR AS | 988380717 | TRONDHEIM |
 | ØEI AS | 812508032 | OSLO |
 | OEN AS | 944328785 | BERGEN |
 | ØEN & HAUGSTAD AS | 988008885 | HÅ |
 | ØEN HYTTEBYGG AS | 892353662 | HOL |
 | ØEN KULDETEKNIKK AS | 834263602 | VOLDA |
 | OFOTEN MASKIN AS | 974492032 | NARVIK |
 | OFOTEN MEK AS | 924426993 | NARVIK |
 | OFOTEN RØR AS | 968277898 | NARVIK |
 | Ø. HELLESØY RØRLEGGER SERVICE | 990118469 | BERGEN |
 | OHNSTAD AS | 923363270 | LARVIK |
 | ØIJORD & AANES ENTREPRENØRFORRETNING AS | 957749933 | RANA |
 | ØISETH MONTASJE AS | 991391401 | KONGSVINGER |
 | ØISTAD ELEKTRO AS | 988277231 | GRAN |
 | ØISTEIN ASK ANDERSEN | 970335633 | SANDEFJORD |
 | ØIVIND ÅSMANN | 968352113 | ULLENSAKER |
 | ØIVIND BRÅTHEN AS | 966890967 | ØVRE EIKER |
 | ØIVIND FJELD BYGG OG TØMRERMESTER AS | 982205492 | BÆRUM |
 | ØIVIND LYSTAD AS | 936860478 | KRISTIANSUND |
 | O J MILJETEIG AS | 938173605 | HAUGESUND |
 | O.J. RØR AS | 998554675 | BÆRUM |
 | ØJ RØR AS | 914179165 | KRØDSHERAD |
 | OK ANLEGG AS | 912697290 | VÅLER (ØSTFOLD) |