| Company name | Reg. code |
|---|---|
| T GROUP OÜ | 14554895 |
| T55 GROUP OÜ kustutatud | 14690037 |
| T&T INVEST GROUP OÜ | 14979482 |
| T&T INVEST GROUP OÜ kustutatud | 12497342 |
| T&L GROUP OÜ | 11087441 |
| T-BERG GROUP OÜ (former name UNT Design OÜ) | 16093185 |
| T-POLIS GROUP OÜ | 14279201 |
| 3T GROUP LIMITED OÜ kustutatud | 14131527 |
| 3T&K GROUP OÜ | 11159287 |
| T.O.K. GROUP OÜ | 16648252 |
| T.M.TEHNIKA GROUP OÜ | 11514736 |
| P.T. CONSULT GROUP OÜ kustutatud | 12516772 |
| ECO T.B.GROUP OÜ kustutatud | 11008341 |
| R.D.T. GROUP OÜ (former name R.D.T Group OÜ) | 14322204 |
| OIL-T ENERGY GROUP OÜ kustutatud | 14438711 |
| E.V.T GROUP OÜ | 14946502 |
| D.D.T. GROUP OÜ | 12978797 |
| T.U.G.O. GROUP OÜ | 10939244 |
| G.T.O.INTERNATIONAL GROUP OÜ | 16870074 |
| ESPERTO MASSAGE OÜ (former name T Transport Forwarding Group OÜ) | 16074590 |
| RENOUVEAU CAPITAL GROUP OÜ (former name W-T Capital Group OÜ) | 17273200 |
| ISEVEN OÜ (former name Global C&T Group OÜ) | 14321297 |
| TP GROUP OÜ | 12080435 |
| TN GROUP OÜ | 14178316 |
| TE GROUP OÜ | 14544703 |
| TH GROUP OÜ kustutatud | 11981923 |
| TRI GROUP OÜ | 14312341 |
| TNJ GROUP OÜ | 10788549 |
| TAS GROUP OÜ | 17201837 |
| TSI GROUP OÜ | 11995475 |
| THG GROUP OÜ | 11195024 |
| TDF GROUP OÜ | 14838244 |
| TRU GROUP OÜ | 14579831 |
| TVT GROUP OÜ kustutatud | 11438998 |
| TOP GROUP OÜ kustutatud | 10668454 |
| TEM GROUP OÜ kustutatud | 14662779 |
| TGM GROUP OÜ kustutatud (former name Taaralinna Garnituuri Meistrid OÜ) | 16695464 |
| TWR GROUP OÜ (former name BBQ Tootmine OÜ) | 12477865 |
| TPF GROUP OÜ | 16277643 |
| TTA GROUP OÜ | 12231957 |
| TPA GROUP OÜ | 12313744 |
| TRG GROUP OÜ | 12883559 |
| TIE GROUP OÜ kustutatud | 11988150 |
| TSV GROUP OÜ | 16037749 |
| TDS GROUP OÜ | 12378206 |
| TVA GROUP OÜ | 12523051 |
| TMS GROUP OÜ | 14237094 |
| TJR GROUP OÜ | 12771464 |
| TKH GROUP OÜ (former name 24/7 Work Group UÜ) | 14169197 |
| TCB GROUP OÜ | 16253175 |