| Yritys | Maa | |
|---|---|---|
| Talas Electric Oy | Finland | |
| TamCent Oy | Finland | |
| Tampereen ammattikorkeakoulu Oy | Finland | |
|
Tampereen Messut Oy | Finland |
| Tampereen Sähköpalvelu Oy | Finland | |
| Target Headhunting Oy | Finland | |
| Targetti Poulsen Finland Oy | Finland | |
| Tatekon Oy | Finland | |
| Insinööritoimisto Tauno Nissinen Oy | Finland | |
|
Tausen Oy | Finland |
| Team Mark Lighting Oy | Finland | |
| Teclux Oy | Finland | |
| Tehdasvalo Oy | Finland | |
| Tehomet Oy | Finland | |
| Teknoware Oy | Finland | |
|
Tele-Exxi Oy | Finland |
| TELE-FONIKA Kable S.A. | Poland | |
| Teleinstrument Oy | Finland | |
| Teleste Oyj | Finland | |
| Tele-Tukku Oy | Finland | |
| Telia Finland Oyj | Finland | |
| Tellabs | Finland | |
| Theben Oy | Finland | |
| Thorn Lighting Oy | Finland | |
|
Tietosähkö Oy | Finland |
| TKH Finland Oy | Finland | |
| Trafomic Oy | Finland | |
| Treston Oy | Finland | |
|
TUFVASSONS AB | Finland |
| Tungsram Operations KFT | Finland | |
| Tunstall Oy | Finland | |
| Oy Tuokko Ltd | Finland | |
| Turku Energia Urakointipalvelut | Finland | |
| Tyco Electronics Finland Oy | Finland | |
| Tykoflex AB | Sweden | |
| TylöHelo Suomi | Finland |
