Bedrift T - Kolsås
- Tekrad AS
- Tov23 AS
- Tobin AS
- Triplex AS
- Tipito AS
- Tekrom AS
- Toppåsen Huseierforening
- Toppåsjordet Huseierforening
- Tannlege Frigaard
- Thomas Amlie
- Trege Gunnarsson
- Toni Stipic
- Taxi AL Khateeb
- Themusicgate Frøybu
- Torkill Wiik
- Trosterud Engineering AS
- Trajan Eiendomsinvest AS
- Thorkildsen Eiendom AS
- Tipi Invest AS
- Tind Software AS
- Techbridge Invest AS
- Tandstad Rorbuer AS
- Topaas Holding AS
- Tipi Consulting AS
- Tangen Consulting AS
- Tina Trøa
- Tanja Zajc
- Thuva Larsen
- Tuva Ambjørseiet
- Tore Lind
- Turid Tarja Bakkelid
- Tone Faugli Consult
- Tuva Halle Md
- Trine-Lise Rygh
- Tannlege Johan Ulstad AS
- Torbjørn Sørby Holding AS
- Trigger Invest Holding AS
- The Management Group AS
- Tangen Consulting Byggkontroll AS
- Ti 247 Holding AS
- Thomas Karlsen Features
- Tora Heidi Christensen
- Torgeir Pedersen Ambjørseiet
- Tekna Etatsforening i Forsvarsmateriell