- Sandwich Shop Restaurants, Tiverton
- Sawmill & Planing Mills, Tiverton
- Sawmill Supplies & Equipment Repair, Tiverton
- Scientific Equipment & Services, Tiverton
- Scientific Services, Tiverton
- Scrap & Waste Materials, Tiverton
- Seafood Restaurants, Tiverton
- Security & Surveillance System & Equipment, Tiverton
- Security Alarm Systems - Home & Business, Tiverton
- Security Control Systems & Monitoring, Tiverton - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Services, Tiverton
- Senior Citizens Service & Health Organizations, Tiverton
- Septic Tank Pumping & Cleaning, Tiverton - Septic Systems
- Septic Tanks & Systems, Tiverton - Wholesale, Dealers & Suppliers
- Sewing & Yarn Stores & Supplies, Tiverton
- Sheet Metal, Tiverton
- Ship & Boat Building & Repairing, Tiverton
- Shopping & Shopping Services, Tiverton
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- Signs, Tiverton
- Ski Equipment, Tiverton
- Ski Equipment Water & Snow Manufacturers, Tiverton
- Snacks & Desserts, Tiverton
- Social Services & Welfare, Tiverton
- Social Workers & Services, Tiverton
- Special Interest Schools Or Instruction, Tiverton
- Specialty Animal Services, Tiverton
- Specialty Stores, Tiverton
- Sporting Goods Manufacturers, Tiverton
- Sporting Goods Stores, Tiverton
- Sports Bars & Lounges, Tiverton
- State Government, Tiverton
- Steel & Metal Goods, Tiverton - Steel Distributors
- Steel Erection Contractors, Tiverton - Steel Erectors
- Stoves & Furnace Equipment, Tiverton - Fittings & Repair Parts
- Swimming Pools Repair, Service, Supplies, Sale & Installation, Tiverton
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