| Total Renhold AS | Jevnaker | 2024 |
| Total Renhold Service AS | Farsund | 2022 |
| Total Security Da | Fredrikstad | 2002 |
| Total Tjeneste AS | Oslo | 2022 |
| Total Upstream Nigeria Ltd | Stavanger | 2014 |
| Total Utleie AS | Mo I Rana | 2015 |
| Total Utleieservice AS | Mosjøen | 2019 |
| Total Vekst AS | Tvedestrand | 2014 |
| Total-Service AS | Hamarvik | 2024 |
| Total-Uteservice AS | Heimdal | 2018 |
| Totalbistand AS | Sarpsborg | 2021 |
| Totaldrift AS | Yven | 2026 |
| Totality Facility Services AS | Hvalstad | 2016 |
| Totaljobs AS | Oslo | 2008 |
| Totalløsning AS | Halden | 2023 |
| Totalrens AS | Melhus | 2025 |
| Totalrent AS | Lier | 2025 |
| Totalsport AS | Kongsvinger | 2014 |
| Totalstay Limited | London Ec1Y 2Ab England | 2017 |
| Totalsystem Finans AS | Heimdal | 2017 |
| Totalt Renhold AS | Narvik | 2012 |
| Toten Anlegg Og Servicetjenester AS | Lena | 2020 |
| Toten Kålrotpakkeri AS | Kolbu | 1986 |
| Toten Løk AS | Skreia | 2015 |
| Toten Vaktmesterservice AS | Vestsida | 2020 |
| Totoro Invest AS | Oslo | 2004 |
| Totten Invest AS | Hemsedal | 2006 |
| Toucan AS | Tromsø | 2020 |
| Touchstone Treasury Center AS | Krokstadelva | 2017 |
| Tour the Fjords AS | Bergen | 2024 |
| Tourcompass | Sarpsborg | 2025 |
| Touring Campers AS | Brumunddal | 2024 |
| Touristshop Tromsø Havn AS | Tromsø | 2025 |
| Tours Norway AS | Valestrandsfossen | 2015 |
| Tov Globus Bemanning | Ua-4608 Ternopil Region | 2019 |
| Tove & Mette Video Da | Rolvsøy | 1989 |
| Toven Båt Da | Leirfjord | 2002 |
| Tovikbonden AS | Tovik | 2021 |
| Tower AS | Sandnes | 2012 |
| Towercrane AS | Skui | 2025 |
| Toyo Construction Co., Ltd. | Jp-Osaka-Shi 541-0043 | 2025 |
| Toyota Haugesund Utleie AS | Haugesund | 2022 |
| Toyota Material Handling Europe Rental AB | Malvik | 2003 |
| Toyota Material Handling Financial Solutions Norway AS | Malvik | 2025 |
| Toyota Sørvest Bilutleie AS | Sandnes | 2000 |
| TP Rent AS | Kløfta | 2022 |
| TP Stillas AS | Kopervik | 2026 |
| Tpi AS | Finnsnes | 2003 |
| TR Byggservice & Trading AS | Bøn | 2016 |
| TR Renhold AS | Moss | 2021 |
| TR Service El HB | 653 50 Karlstad | 1998 |
| TR. Holding AS | Tromsø | 2015 |
| TR7 Trondheimsveien 7 AS | Oslo | 1998 |
| Traa Holding AS | Kristiansund N | 2013 |
| Traavel AS | Kråkstad | 2023 |
| Trablider - Empresa De Trabalho Temporario Lda | Pt-4435-213 Rio Tinto | 2018 |
| Tracs Traning | Aberdeen Ab11 5Qx Scotland | 2010 |
| Trade and Service Group AS | Birkeland | 1991 |
| Trade Force AS | Sandnes | 2023 |
| Trading Holding AS | Oslo | 2013 |
| Tradinghouse Da | Røyken | 2003 |
| Trafikk Og Mediaconsult Ans | Frei | 1995 |
| Trafikk Og Transport AS | Finnsnes | 2011 |
| Trafikkdrift AS | Fredrikstad | 2019 |
| Trafsys AB | Se-192 79 Sollenuta | 2014 |
| Trail Nordic AS | Hosle | 2021 |
| Trailblazer Travel AS | Flekkerøy | 2019 |
| Trailcraft Nuf | Nl-8441 An Heerenveen | 2025 |
| Trailer Utleie Og Transporttjenester Da | Tranby | 2023 |
| Trainee Innlandet SA | Hamar | 2011 |
| Trainee Sunnmøre SA | Ålesund | 2025 |
| Trainee Sør AS | Kristiansand S | 2007 |
| Trainpoint Norway AS | Jaren | 2015 |
| Trallfa Capital AS | Sandnes | 2015 |
| Trallfa Focus AS | Sandnes | 1986 |
| Tranby AS | Vøyenenga | 2003 |
| Tranby Entreprenør Utleie AS | Tranby | 2018 |
| Tranby Greencare AS | Vøyenenga | 2026 |
| Tranhammer AS | Oslo | 2016 |
| Tranquille Investments LLC | 80204 Colorado Denver | 2010 |
| Transalliance AS | Vannareid | 2013 |
| Transcom Norge AS | Rolvsøy | 1989 |
| Transfer AS | Ranheim | 2017 |
| Transfer Service AS | Bergen | 1993 |
| Tranship B.V | 1780 As Den Helder | 2014 |
| Translego AS | Brandbu | 2016 |
| Transmar AS | Ansnes | 2001 |
| Transmar HR AS | Ansnes | 2025 |
| Transmedica | Dk 1620 København V | 1996 |
| Transmedica Norge AS | Oslo | 2023 |
| Transocean Drilling UK Ltd. | Aberdeen Ab15 8Pu Scotland | 2018 |
| Transocean Spitsbergen ASA | Stavanger | 2005 |
| Transport Og Anleggsservice AS | Drammen | 2018 |
| Transport Og Maskinutleie AS | Oslo | 2026 |
| Transportutleie Hardanger AS | Odda | 2011 |
| Transway Contracting B.V. | 1035 Sg Amsterdam | 1999 |
| Trappeconsult AS | Drammen | 1989 |
| Trapperingen AS | Bremnes | 2002 |
| Trappevask Service AS | Fjellhamar | 2020 |
| Trappvask AS | Trondheim | 2020 |