 | TKT INNEKLIMA AS | 923792333 | PORSGRUNN |
| TL BOLIG AS | 921955723 | INDRE ØSTFOLD |
| T.L BYGG AS | 919059044 | HAMAR |
| T LEER BYGGSERVICE AS | 919999977 | SIGDAL |
| TL MASKIN AS | 993642193 | NORDRE LAND |
| TLS ELEKTRO AS | 920416721 | LIER |
| TMA BYGG AS | 927181622 | FREDRIKSTAD |
| TM BETONG AS | 991654887 | DRANGEDAL |
| TM BYGGSERVICE AS | 926311158 | SANDNES |
| TM BYGGSYSTEM AS | 928067572 | FREDRIKSTAD |
| TM BYGGTEK AS | 913071409 | GJESDAL |
| TM BYGG Trygve Magerøy | 992126825 | AUKRA |
| TMC BYGG AS | 918852166 | LILLESTRØM |
| T.M. RØR AS | 890451462 | OSLO |
| TN BYGG OG BAD AS | 927835495 | ASKER |
| T N SERVICE AS | 927870932 | BERGEN |
| TN VARMETEKNIKK AS | 918646663 | INDRE ØSTFOLD |
| TOC AS | 996672840 | KRISTIANSAND |
| T.O. CHRISTENSEN MASKIN & TRANSPORT | 995715252 | HEMNES |
| TOFIRE AS | 987363738 | KRISTIANSAND |
| T.O.FJELD AS | 999619614 | FREDRIKSTAD |
| TOFTEBERG AS | 927085755 | RÅDE |
| TOFTERÅ BYGG AS | 819665842 | STAVANGER |
| TOFTING BYGGSERVICE | 913101200 | ASKØY |
| TOGIN AS | 975942007 | SKAUN |
| TOKHEIM & NARJORD AS | 980107248 | BÆRUM |
| T. OLSEN RØR AS | 931527150 | MÅLSELV |
| TOMAS BYGG AS | 822997082 | FRØYA |
| TOMAS LANGVIK AS | 929471520 | SARPSBORG |
| TOMAS TYSSEBOTN AS | 918474021 | KVAM |
| TOM BERGE AS | 924277203 | NOME |
| TOMBYGG AS | 922625603 | OSLO |
| TOM-ERIK FLADEBY | 987461683 | LILLESTRØM |
| TOMHUS AS | 920735959 | OSLO |
| TOM HVAAL AS | 876000202 | LARVIK |
| TØMMERDAL CONSULT AS | 992065591 | ÅLESUND |
| TØMMERHOEL ALF ERLEND | 970433007 | GJØVIK |
| TØMMERHOLT ARMERING AS | 923404376 | SARPSBORG |
| TOMMY NIKOLAISEN | 920829708 | EIDSVOLL |
| TOMMY S. ELNÆS AS | 992571152 | NITTEDAL |
| TOMMYS HAGE & ANLEGG AS | 985272913 | BERGEN |
| TOMMY THO BYGG- OG HYTTESERVICE | 824676372 | SEL |
| TOM ØIOM BORGERSEN AS | 913320328 | JEVNAKER |
| TOMRA MASKIN AS | 974496682 | VESTNES |
| TØMRAR 1 AS | 917802254 | ØRSTA |
| TØMRAR ÅGE VIK | 991456953 | ASKØY |
| TØMRAR BRYNJULV LIE AS | 915643442 | VOSS |
| TØMRAR-ELIN Elin Gallefoss | 991872078 | STAD |
| TØMRAR EN MYKLEBUST AS | 929641590 | GLOPPEN |
| TØMRAR HELGE ANDVIK | 970354824 | MASFJORDEN |