- Tractor dealer
- Training courses
- Telemarketing service
- Tree service
- Tour operator
- Telephone answering service
- Tenant's union
- Tea house
- Townhouse complex
- Tobacco shop
- Training school
- Tea store
- T-shirt store
- Transcription service
- Tax preparation service
- Thrift store
- Tax
- Travel lounge
- Trial attorney
- Trade fair construction company