| Company name | Reg. code |
|---|---|
| TRIXEL OÜ | 10819899 |
| TRINEL OÜ | 16409872 |
| TRITEL OÜ | 16819630 |
| TRIMEL OÜ (former name Foto Lillemets OÜ) | 14526409 |
| SERELIN OÜ (former name Trikkel OÜ) | 11210841 |
| ECHOSEARCH OÜ (former name Triper OÜ) | 14718422 |
| KETSIBRAND OÜ (former name Trimeo OÜ) | 17052202 |
| TRIPLE8 OÜ | 14326538 |
| TRIREM OÜ kustutatud | 11514759 |
| TRINEB OÜ | 14013360 |
| TRIMER OÜ | 14039394 |
| TRIEER OÜ | 10266851 |
| TRINET OÜ | 10532778 |
| TRIMPEL OÜ kustutatud | 11753331 |
| TRILEP OÜ | 16860437 |
| TRINOL OÜ | 14097842 |
| TRICELA OÜ | 16800027 |
| TRIDES OÜ | 16473686 |
| TRIPLE1 OÜ (former name SEMINAL INVEST OÜ) | 12918424 |
| TRIDEX OÜ | 14648762 |
| TRITEK OÜ | 14470703 |
| TRIDEV OÜ | 12779827 |
| TRIMEN OÜ | 17072989 |
| TRIMED OÜ | 14298724 |
| TRIPELS OÜ | 16857501 |
| TRIFEK OÜ kustutatud | 14217967 |
| TRIPLEL OÜ kustutatud | 14164395 |
| TRISEN OÜ | 14149183 |
| TRIIBEL OÜ | 14872577 |
| TRAXEL OÜ | 14606404 |
| EHITEC NORD OÜ (former name VL Trimer OÜ) | 14386026 |
| TRICKET TICKET OÜ (former name TRICET TICKET OÜ) | 14840577 |
| TRIIVEL INVEST OÜ kustutatud | 11547931 |
| TRIPLE 8 HOLDINGS OÜ | 17091751 |
| TRIMEN CAPITAL OÜ | 11281901 |
| TRIPLE SEVEN OÜ | 11095305 |
| TRIPLE M OÜ | 11194384 |
| TRIMEN KONSULT OÜ | 11743402 |
| TRISTEL GRUPP OÜ | 11252555 |
| TRIKET HALDUS OÜ (former name Dellera BIO OÜ) | 12094615 |
| TRIAAL AUDIT OÜ | 10813419 |
| TRIPLE TEAM OÜ kustutatud | 11453957 |
| TRINGEL CATERING OÜ | 17020123 |
| TRIPLE TWO OÜ | 14320346 |
| NY TRILLE OÜ | 14152699 |
| TRILEX KAUBANDUS OÜ | 10534151 |
| TRIBAL SENSATION OÜ | 12437328 |
| TRISIL INVEST OÜ kustutatud | 11121882 |
| TRIPLE MOVEMENT OÜ | 16582903 |
| K-TRIPLE OÜ | 14653088 |