| Ettevõtte nimi | Reg. kood |
|---|---|
| T.O ENGINEERING OÜ | 12778360 |
| TF ENGINEERING OÜ | 17460125 |
| TM ENGINEERING OÜ | 16825205 |
| TDG ENGINEERING OÜ | 12784018 |
| THV ENGINEERING OÜ kustutatud | 12668430 |
| TPS ENGINEERING OÜ | 12663190 |
| TJT INVEST OÜ (endine nimi Firewood Trade OÜ) | 11661058 |
| TALI ENGINEERING OÜ kustutatud | 12771429 |
| TONY ENGINEERING OÜ | 14695075 |
| TESLA ENGINEERING OÜ kustutatud | 12381220 |
| TASMO ENGINEERING OÜ kustutatud | 10197765 |
| TYPE1 ENGINEERING OÜ | 14548011 |
| THORN ENGINEERING OÜ | 14591909 |
| TITAN ENGINEERING OÜ | 10668785 |
| ERKNORD INSENERID OÜ UÜ kustutatud (endine nimi OÜ Novaelement Engineering) | 12255998 |
| TIMBER ENGINEERING OÜ | 14420869 |
| TOUCAN ENGINEERING OÜ | 12656020 |
| YOYE HINTRAGER OÜ kustutatud (endine nimi TFA Engineering OÜ) | 12234559 |
| JAHHWORK OÜ (endine nimi Taska Productions OÜ) | 11095067 |
| TALLEST ENGINEERING OÜ kustutatud (endine nimi OÜ HEMUL) | 10976593 |
| TERMARK ENGINEERING OÜ | 12542404 |
| THERMAL ENGINEERING OÜ kustutatud | 14971428 |
| GROUSE & HILL OÜ (endine nimi Public Transport Engineering OÜ) | 10686292 |
| MAKCO GROUP OÜ kustutatud (endine nimi Engineering Tools OÜ) | 12543837 |
| ALTSIGNALS TECHNOLOGY OÜ kustutatud (endine nimi OÜ Tribeca Engineering) | 16674060 |
| TEAMWORK ENGINEERING OÜ (endine nimi Ecotanc OÜ) | 10725075 |
| TECTONIC ENGINEERING OÜ kustutatud | 14970251 |
| TVERPROM ENGINEERING OÜ kustutatud (endine nimi Landfell Grupp OÜ) | 11877628 |
| MK TOOLS & ENGINEERING OÜ kustutatud | 12219886 |
| TEGELMANN ENGINEERING OÜ | 14143401 |
| K.A. THERMO ENGINEERING OÜ | 10675420 |
| AM TRADING & ENGINEERING OÜ kustutatud (endine nimi OÜ Royjben) | 11270760 |
| ENGINEERING TECHNOLOGY OÜ | 12198556 |
| THREESIXTY ENGINEERING OÜ | 16285849 |
| PÕLVA TEHNIKA ENGINEERING OÜ kustutatud | 14854668 |
| TULA ENGINEERING SERVICES OÜ kustutatud (endine nimi OÜ Robotics Hold) | 12403476 |
| TE ENGINEERING & CONSULTING OÜ (endine nimi TE Trading & Consulting OÜ) | 12305740 |
| TES - CONSULTING ENGINEERING OÜ | 16461967 |
| WATER TREATMENT ENGINEERING OÜ (endine nimi Kelbo OÜ) | 14116114 |
| TESK ENGINEERING CONSULTANTS OÜ | 12660575 |
| TETECH DESIGNING & ENGINEERING OÜ | 12272838 |
| BALTFORD TECHNOLOGY ENGINEERING OÜ kustutatud (endine nimi Eventweb OÜ) | 11550583 |
| BTE BALTIC TECHNOLOGY ENGINEERING OÜ | 14301283 |
| SMART TRAINING, ENGINEERING & CONSULTING OÜ | 17506666 |
| FIBONACCI TRANSPORT & ENGINEERING SOLUTIONS OÜ kustutatud (endine nimi OÜ Traffic Sign) | 10924449 |
| ENGINEERING INSTITUTE FOR INTEGRATED DEVELOPMENT AND TECHNOLOGY OÜ | 16410987 |