- Take-out and Delivery Services
- Takeout & Delivery Restaurants
- Talent Acquisition & Management Services
- Tanning of leather
- Tanning Services
- Tax Collection and Regulation
- Tax law advice
- Tax law advisory services
- Tax Preparation & Compliance Services
- Tax preparation services
- Taxation law
- Tea Rolling
- Tea Withering
- Team and Club Sports
- Team sports
- Technical consultancy in energy
- Technical consulting services
- Technical textile knitting and crocheting
- Technical Translations and Interpretations
- Technical Writing and Documentation Services
- Technical Writing Services
- Telecommunications Companies
- Telecommunications consulting services
- Telecommunications Equipment Suppliers
- Telecommunications infrastructure providers
- Telecommunications Line & Tower Installation
- Telecommunications network cabling and wiring
- Telecommunications research and development
- Telecoms & Networking Systems Design and Development
- Television Advertising
- Television/Broadcast Syndication Distribution
- Television broadcasting
- Television & Commercial Production
- Television Home Shopping
- Television Production
- Television programme distribution
- Television Programme Production
- Television programming and broadcasting activities
- Tempering of Flat Glass
- Tenant-Owners' Association Services
- Tent Campsites
- Tent Rental Services
- Terminal operations management services related to water transportation
- Terrazzo, Tile, Marble and Mosaic Work
- Test Drilling
- Test preparation services
- Test Preparation and Tutoring Services
- Testing and Certification of Fibre Optic Cables
- Testing and Quality Assurance for Loaded Electronic Boards
- Textbook Publishing
- Textile Dying & Finishing using cotton fabrics
- Textile Finishing and Dyeing
- Textile manufacturing speciality machines
- Textile Washing and Drying Services
- Textile Waste and Scrap Wholesale
- Textile Weaving and Knitting
- Theater & Performance Arts
- Theatre Instruction
- Theme Park Food Services
- Theme park Merchandise Retail
- Therapeutic Recreation ProgramsforPersonswithMentalRetardationandMentalDisability
- Thermal Desorption/Destruction Technologies for Non-Hazardous Wastes
- Ticketing and Ticket Collection at Railway Stations
- Tile Roof Installation and Repair
- Tiling
- Timber Volume Estimation
- Time-shares
- Titanium Casting
- Titanium Production
- Tobacco shops
- Toddler Day Care
- Tour Guide Services
- Tour guides and tour operations
- Tour Operator
- Tourist attractions and exhibits
- Tourist Trains & Charters
- Towing for Rail Transportation
- Toys, Games and Sports Requisites Retail Sale in Specialized Stores
- Trade Association Representation and Advocacy
- Trade Associations
- Trade Book Publishing
- Trade Show Logistics
- Trade Show Promotion
- Trademark and copyright protection advice
- Traditional Lime Plastering
- Traffic Control Management
- Traffic Management & Control Systems Installation/Maintenance
- Traffic Services and Regulation Services
- Training programmes aimed at improving the life skills of children and young people with social problems
- Translation, Interpreting, and Language Solutions
- Transparency Makers
- Transport and distribution of stone, sand and clay
- Transportation and Logistics
- Transportation Engineering
- Transportation Logistics Consulting
- Transportation of Natural Gas
- Transportation of Piglets
- Trapping Equipment and Supplies Retailers
- Treatment and Disposal of Petroleum Waste
- Treatment and processing of hazardous waste
- Treatments (eg. Keratin, Hydrating, Smoothing)
- Tree Nursery Services
- Tree planting and cultivation
- Tree Pruning & Trimming Services
- Trenchless Sewer Lining Services
- Trout Cultivation
- Trust and other fiduciary activities (other than pension funding)
- Trustee and Custodian Services for Pensions
- Trustee and Custody Services
- Tunneling and Drilling Services
- Tutoring and Education Services
- Tutoring Services
- TV Broadcasting Services
- Tyre Balancing
- Tyre Fitting
- Tyre Recycling Services
- Tyre servicing/repair for vehicles
- Tyre Storage Solutions