 | TFS BLIKK OG FASADE AS | 932319365 | MELHUS |
| TFS ENTREPRENØR AS | 912534154 | MELHUS |
| TFS TAK OG MEMBRAN AS | 932319357 | MELHUS |
| TGA AS | 990691991 | VESTRE TOTEN |
| TG CONSTRUCTION AS | 929450825 | HORTEN |
| TGK BYGG AS | 997230345 | RINGERIKE |
| TG MONTASJE AS | 928779777 | TØNSBERG |
| TG TØMRERSERVICE AS | 926405551 | STJØRDAL |
| T H A EIDE | 976742605 | STAVANGER |
| THARASO AS | 911734931 | SOGNDAL |
| TH BHAS BYGG AS | 967751081 | ØYGARDEN |
| TH BLIKK AS | 912783537 | RANA |
| THE AS | 980044637 | OSLO |
| THE PRO BYGG AS | 818103832 | TRONDHEIM |
| THERMA INDUSTRI AS | 991863796 | OSLO |
| THERMA KULDE AS | 917216401 | OSLO |
| THERMAX AS | 984757514 | TØNSBERG |
| THERMICA AS | 997933273 | LIER |
| THERMO CONTROL AS | 979439334 | NORDRE FOLLO |
| THERMO CONTROL NORD AS | 846202552 | HARSTAD |
| THE WAGONSHED PROJECT AS | 928079325 | KONGSBERG |
| TH INDUSTRIBYGG AS | 927387344 | MOSS |
| THINGSTAD BJØRN | 971653493 | ÅMOT |
| TH. JOHANSEN & SØNNER AS | 935721652 | RINGSAKER |
| TH KOLBEINSEN INSTALLASJON AS | 976038266 | KARMØY |
| TH MASKIN AS | 998557976 | HEMSEDAL |
| THOEN MASKIN AS | 995352605 | ÅL |
| T HOLAND MASKIN AS | 980927539 | EIGERSUND |
| T HOLMEIDE & SØNNER AS ENTREPRENØRFORRETNING | 944229264 | LIER |
| THOMAS DALEN | 994550284 | STRAND |
| THOMASSEN ARKITEKTKONTOR AS | 963092229 | OSLO |
| THOMASSEN BYGG AS | 991281959 | SALANGEN |
| THOMASSEN RØR AS | 818952872 | LILLESAND |
| THON & CO AS | 935062691 | MODUM |
| THON MASKIN AS | 925389269 | NORD-AURDAL |
| THORALF MYHRE AS | 917871167 | SANDNES |
| THORBJØRNSEN RØR AS | 929066014 | NORDRE FOLLO |
| THORE KNUTSEN MASKIN OG TRANSPORT AS | 991327495 | TYSVÆR |
| THORE LUNDHAGEN GRAVING/TRANSPORT | 992240911 | LILLESTRØM |
| THORE MAGNUSSEN OG SØNN AS | 975950824 | VESTVÅGØY |
| THORENDAHL AS | 963265433 | OSLO |
| THOR ENGINEERING AS | 914464676 | ÅSNES |
| THORGERSEN BYGG OG BETONG | 988084883 | KARMØY |
| THOR GJUL AS | 989995332 | ØRLAND |
| THOR HARTVIG LUNDE | 989503693 | TVEDESTRAND |
| THOR HÅVARD TORP GRAVING & TRANSPORT | 970938699 | FREDRIKSTAD |
| THØRING & SØNNER AS | 933396347 | LESJA |
| THOR MAGNE HANSEN & SØNN AS | 985826617 | LYNGDAL |
| THORMODSÆTER ENTREPRENØR AS | 993578258 | KVINNHERAD |
| THOR MYRVANG GRAVEFIRMA AS | 919798726 | RINGERIKE |