- Telecommunications service provider
- Tool grinding service
- Tax consultant
- Telecommunications equipment supplier
- Tax preparation
- Tourist attraction
- Training centre
- Tool store
- Telecommunications contractor
- Tool manufacturer
- Toolroom
- Turnery
- Toner cartridge supplier
- Television repair service
- Tool rental service
- Truck dealer
- Truck accessories store
- Telephone company
- Trailer supply store
- Tool & die shop