 | ANLEGGSGARTNER TEAM HARDHAUS AS | 988288268 | ÅSNES |
| ANLEGGSMASKINER AS | 914330858 | TRONDHEIM |
| ANLEGGS- OG INDUSTRIDYKK AS | 993298018 | STORD |
| ANLEGGSPARTNER SØR AS | 992865768 | KRISTIANSAND |
| ANLEGGS-SERVICE AS | 953553635 | RANA |
| ANLEGGSSERVICE AS | 985394717 | SYKKYLVEN |
| ANLEGGSSERVICE ØRSTA AS | 915406726 | ØRSTA |
| ANLEGGSSYSTEMER AS | 942012470 | SANDNES |
| ANLEGGSTEKNIKK ALTA AS | 995919427 | ALTA |
| Anleggstjenester A/S | 946720046 | MELHUS |
| ANLEGG VEST AS | 917680272 | ASKØY |
| ANNA EINARSEN ARKITEKTKONTOR AS | 916205899 | BØ (NORDLAND) |
| ANNO STUDIO FOR ARKITEKTUR DESIGN OG LANDSKAPSFORMING SIVILARKITEKTER ANS | 941680224 | OSLO |
| ANOR AS | 998743060 | HOLMESTRAND |
| ANOVA BOLIGER AS | 993587249 | MOSS |
| ANSNES ENTREPRENØR AS | 966103108 | ASKER |
| ANS ØVERN & DYBVIG TØMRERLAG | 960785746 | RINGSAKER |
| ANTARK SOLBERG | 917478376 | NORDRE FOLLO |
| ANTHONY FEBRILLET MARTINEZ | 919630922 | ULLENSAKER |
| ANTIKVARISK RESTAURERINGSVERKSTED - ARV AS | 990683921 | TRONDHEIM |
| ANTON I. HUNSBEDT AS | 989459392 | KVINESDAL |
| ANTON VVS TEKNIK 24 TIMERS SERVICE Anton Shllaku | 990898855 | ASKER |
| ANUND DYRUD | 984919085 | MIDT-TELEMARK |
| ÅNUND RAGNAR DUKANE | 984455429 | ÅMLI |
| AOG BYGG AS | 866761752 | BERGEN |
| A OG J BJORDAL AS | 925827207 | HØYANGER |
| A.O.KLEIVE BYGG AS | 930605972 | MOLDE |
| APARO ENERGI AS | 993167800 | KONGSVINGER |
| A PAULSEN & SØNNER AS | 939284699 | IBESTAD |
| APRIL ARKITEKTER AS | 910279009 | OSLO |
| APROVA AS | 995156954 | ARENDAL |
| AQILA AS | 937155085 | VESTVÅGØY |
| AQUACONSULT AS | 933746623 | OSLO |
| AQUA FLIS AS | 991912851 | NORDRE FOLLO |
| AQUAPARTNER AS | 963164157 | GRIMSTAD |
| AQUARIUS RØRLEGGERBEDRIFT AS | 992887397 | OSLO |
| AQUARØR AS | 995799715 | OSLO |
| AQUA RØRFORNYING AS | 925568201 | TRONDHEIM |
| AQUA RØRSERVICE AS | 931007017 | TRONDHEIM |
| AQUA TECH AS | 971095245 | OSLO |
| AQUA VVS AS | 994596772 | FREDRIKSTAD |
| AQUA VVS SENTERET AS | 983357601 | LARVIK |
| AQWA AS | 998593956 | SANDEFJORD |
| ARAI PROSJEKT AS | 996351122 | SKIEN |
| ARALIA AS | 932992272 | NORDRE FOLLO |
| AR ANLEGG AS | 930899631 | KRISTIANSAND |
| ARA RØR AS | 930335967 | OSLO |
| ARBO ENTREPRENØR AS | 966177810 | DRAMMEN |
| ARCA GLASS OG FASADE AS | 920554091 | STAVANGER |
| ARCA NOVA ENTREPRENØR AS | 984925360 | FREDRIKSTAD |