- Safe & Vault, Montreal
- Safety & Security Systems & Consultants, Montreal
- Safety Equipment & Supplies, Montreal
- Safety Training Schools, Montreal
- Sailboards Retail, Montreal
- Sailing Instructions, Montreal
- Sales & Marketing Consultant, Montreal
- Salvage Yards, Montreal - Auto, Motorcycle, Boat, Trucks, etc
- Salvation Army, Montreal
- Sample Cases Cards & Books, Montreal
- Sand Gravel & Aggregate, Montreal
- Sandblasting, Montreal - General Contractors
- Sandwich Shop Restaurants, Montreal
- Satellite & Cable TV Equipment & Systems Repair & Service, Montreal
- Satellite Communication Downlinking & Uplinking, Montreal
- Satellite Dish Antennas & Equipment Dealers, Montreal
- Satellite TV Service, Montreal
- Savings & Loan Associations, Montreal
- Savings Banks, Montreal
- Sawdust & Shavings, Montreal
- Sawmill, Paper & Woodworking Supplies, Machinery & Equipment, Montreal
- Scaffolding & Aerial Lifts, Montreal
- Scales Retail, Montreal
- Scholarships Grants & Financial Assistance Information, Montreal
- School - Christian, Montreal
- Science & Research, Montreal
- Scientific & Laboratory Equipment & Instruments, Montreal
- Scientific & Research Professionals, Montreal
- Scientific & Technical Consultants, Montreal
- Scientific Equipment, Montreal
- Scientific Equipment & Services, Montreal
- Scientific Equipment & Supplies, Montreal
- Scientific Services, Montreal
- Scientology Churches, Montreal
- Scoreboard Signs, Montreal
- Scrap & Waste Machinery, Montreal
- Scrap & Waste Materials, Montreal
- Scrapbooks & Scrapbook Supplies, Montreal
- Screen Printing, Montreal
- Screening & Sifting Equipment & Services, Montreal
- Sculptors, Montreal
- Seafood Restaurants, Montreal
- Seals, Montreal - Hermetic, Hydraulic, Mechanical, Metal, Oil, Grease, etc
- Seals Notary & Corporation, Montreal
- Seals O Ring, Montreal
- Search & Rescue, Montreal
- Searchers Of Records, Montreal
- Secondary Schools, Montreal
- Secretarial & Court Reporting Services, Montreal
- Secretarial School, Montreal
- Security & Commodity Exchanges, Montreal
- Security & Surveillance System & Equipment, Montreal
- Security Alarm Systems - Home & Business, Montreal
- Security Brokers & Dealers, Montreal
- Security Consultants, Montreal
- Security Control Systems & Monitoring, Montreal - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Doors & Windows, Montreal
- Security Guard & Patrol Service, Montreal - Bodyguard, Guard Dogs, Etc
- Security Investigative Services, Montreal
- Security Services, Montreal
- Semi Precious Metals, Montreal
- Seminars & Workshops, Montreal
- Senior Citizens Housing, Montreal
- Senior Citizens Service & Health Organizations, Montreal
- Septic Tank Pumping & Cleaning, Montreal - Septic Systems
- Septic Tanks & Systems, Montreal - Wholesale, Dealers & Suppliers
- Service Establishment Supplies & Equipment, Montreal
- Services Allied With The Exchange Of Securities & Commodities, Montreal
- Sewer & Drain Cleaning & Repair, Montreal - Drain Cleaner & Installation Services
- Sewing & Yarn Stores & Supplies, Montreal
- Sewing Buttons, Montreal
- Sewing Contractors, Montreal
- Sewing Machine Repair & Service, Montreal
- Sewing Machines, Equipment & Supplies, Montreal
- Sewing Ribbons, Montreal
- Sewing Thread, Montreal
- Sex Counseling & Therapy, Montreal
- Sharpening Service, Montreal
- Sheepskin Specialties, Montreal
- Sheet Metal Contractors, Montreal - Sheet Metal Fabrication
- Sheet Metal Fabricators & Ductwork Contractors, Montreal
- Shelving & Shelves, Montreal - Metal, Steel, Wire & Glass Shelving Units & Storage - Wall Shelves
- Shelving Equipment, Montreal
- Sherwin Williams Paint, Montreal
- Ship & Boat Building & Repairing, Montreal
- Ship & Yacht Broker & Agent, Montreal
- Ship Chandlers, Montreal
- Shipping Companies, Montreal
- Shipping Service, Montreal
- Shirts & T-Shirts, Montreal
- Shirts Wholesale & Retail, Montreal
- Shish Kebab Restaurants, Montreal
- Shoe Repair & Shoeshine Parlors, Montreal
- Shoe Repair Shops, Montreal
- Shoe Repair Supplies & Equipment, Montreal
- Shoe Store - More, Montreal
- Shoe Stores, Montreal - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Montreal
- Shopping Services, Montreal
- Short Term Business Credit Institutions, Montreal
- Shutters - Interior & Exterior, Montreal - Wood, Vinyl, Window, Plantation Shutters, etc
- Siding Contractors, Montreal - Vinyl Siding, Wood, Metal & Aluminum Siding Contractors - Installation & Repair
- Siding Materials, Montreal
- Sightseeing Tours, Montreal
- Sign Equipment & Supplies, Montreal
- Sign Hanging & Installation Service, Montreal - Signs Erectors & Hangers
- Sign Supplies & Sign Making Equipment, Montreal
- Signs, Montreal
- Silk Screen Printing, Montreal
- Silkscreen Printing, Montreal
- Singing & Vocal Training Schools, Montreal
- Singing Entertaining & Greeting Telegrams, Montreal
- Skateboards & Equipment Shops, Montreal - Skateboarding Supplies
- Skating Rink & Hockey Operation Services, Montreal
- Skating Supplies, Montreal - Ice, Inline, Speed, Figure & Roller Skates
- Ski & Snowmobile Clubs, Montreal
- Ski Equipment, Montreal
- Ski Equipment Water & Snow Manufacturers, Montreal
- Skin Care & Cosmetology Salons, Montreal
- Skin Care Products & Treatments, Montreal
- Skylights, Montreal - Skylight Shades, Blinds, Covers & More
- Slate, Montreal
- Sleep Disorders Treatment & Information Centers, Montreal
- Sleep Doctors, Montreal - Specialists, Physicians & Surgeons (Sleep Medicine)
- Small Appliances, Montreal
- Smelters & Refiners Precious Metals, Montreal
- Smoke Stacks Manufacturers, Montreal
- Smoked Meat Restaurants, Montreal
- Smokers Articles Wholesale & Manufacturers, Montreal
- Smoking Cessation Treatment Centers & Information Services, Montreal
- Snack Foods, Montreal
- Snacks & Desserts, Montreal
- Snow Removal Services, Montreal - Snow Plow Service
- Snowmobile Dealers, Montreal - Parts, Gear, Clothing & Accessories
- Soaps & Cosmetics, Montreal
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- Soccer Clubs, Montreal
- Social Clubs & Organizations, Montreal
- Social Consultants, Montreal
- Social Science Research Professionals, Montreal
- Social Services & Welfare, Montreal
- Social Workers & Services, Montreal
- Societies & Foundation Associations, Montreal
- Sod & Sodding Service, Montreal
- Soil Testing Labs, Montreal - Concrete Testing
- Solar Equipment, Montreal
- Solariums & Garden Rooms, Montreal
- Sound Proofing, Montreal
- Sound Systems, Microphones & Equipment, Montreal
- South American Restaurants, Montreal
- Space Heaters, Montreal
- Space Planning, Montreal
- Spanish Restaurants, Montreal
- Special Coatings, Montreal - Protective Coatings
- Special Dies Tools Jigs & Fixtures Manufacturers, Montreal
- Special Education & Care, Montreal
- Special Events & Party Supply Rental, Montreal
- Special Events Photographers, Montreal
- Special Interest Schools Or Instruction, Montreal
- Special Needs Transportation, Montreal
- Speciality Food Stores, Montreal
- Specialty Animal Services, Montreal
- Specialty Communication Companies & Services, Montreal
- Specialty Goods Storage, Montreal
- Specialty Stores, Montreal
- Specialty Vehicle Rental & Leasing, Montreal
- Speech & Hearing Specialists, Montreal
- Speech & Language Therapy, Montreal
- Speech Pathologists, Montreal - Speech & Language Therapy
- Speed Reducers, Montreal
- Spiritual Church, Montreal
- Sporting & Recreational Camps, Montreal
- Sporting Goods Equipment Rental, Montreal
- Sporting Goods Manufacturers, Montreal
- Sporting Goods Stores, Montreal
- Sports & Recreational Services, Montreal
- Sports Bars & Lounges, Montreal
- Sports Clubs, Montreal
- Sports Medicine, Montreal - Doctors, Physicians & Surgeons
- Sports Promoters & Managers, Montreal
- Sports Promotions & Special Events, Montreal
- Sportswear Clothing Stores, Montreal - Sports Clothes
- Sportswear Manufacturers, Montreal
- Sportswear Wholesale, Montreal
- Spraying Booths & Equipment, Montreal
- Springs Automotive, Montreal
- Springs Coil Flat - Industrial Supply & Equipment, Montreal
- Springs Coil Flat Etcetera Manufacturers, Montreal
- Sprinkler Alarm Systems, Montreal - Fire Sprinkler Systems
- Stadiums, Arenas, Coliseums & Athletic Fields, Montreal
- Staffing & Support Services, Montreal
- Stainless Steel, Montreal
- Stairs & Railings Contractors, Montreal - Metal & Wood Stairs, Spiral Staircase & Stair Railing - Installation & Repair
- Stairs & Steps, Montreal
- Stairs, Balcony, Terrace & Steeple Contractors, Montreal
- Stamp Collecting & Coin Dealers , Montreal
- Stamping Cold Gold Hot Etcetera, Montreal
- Stamping Equipment & Supplies, Montreal
- State Government, Montreal
- Stationery & Office Supplies, Montreal
- Stationery Engravers, Montreal
- Stationery Manufacturers, Montreal
- Statisticians, Montreal
- Steak House Restaurants, Montreal
- Steam Bath Equipment & Supplies, Montreal
- Steam Cleaner - Commercial & Industrial, Montreal - Steam Cleaning - Upholstery, Floor, Carpet, etc
- Steamship Companies & Agencies, Montreal
- Steel & Metal Goods, Montreal - Steel Distributors
- Steel Detailers, Montreal
- Steel Erection Contractors, Montreal - Steel Erectors
- Steel Fabrications Specialties, Montreal
- Steel Fabrications Steel Joists Manufacturers, Montreal
- Steel Frame Manufacturers, Montreal
- Steel Frame Supplies, Montreal
- Steel Manufacturers, Montreal
- Steel Mills & Blast Furnaces, Montreal
- Steel Reinforcing Supplies, Montreal
- Steel Springs Manufacturers Except Wire, Montreal
- Steel Treatment, Montreal
- Steel Treatment, Montreal
- Steel Work Contractors, Montreal
- Stereo, Audio & Video Equipment Dealers & Stores, Montreal
- Sterilizing Services, Montreal
- Stevedoring Contractors, Montreal
- Stitching Services, Montreal
- Stock & Bond Brokers & Dealers, Montreal
- Stock Exchanges, Montreal
- Stock Photographers, Montreal
- Stock Quotation Board Signs, Montreal
- Stocks & Bond Brokers, Montreal
- Stone & Rock Quarry, Montreal - Gravel Pit, Shale, Granite, Limestone, Crushed Rock, etc
- Stone And Glass Products, Montreal
- Stone Setting Contractors, Montreal
- Storage & Closet Equipment Supplies & Materials, Montreal
- Store & Retail Fixtures & Display Manufacturers, Montreal
- Store Fixtures, Montreal
- Store Fixtures & Display Equipment, Montreal
- Store Fronts, Montreal - Storefront
- Stoves & Furnace Equipment, Montreal - Fittings & Repair Parts
- Street Cleaning Services, Montreal
- Stress Management & Counseling, Montreal
- String Instruments Manufacturers, Montreal
- Stucco Siding Contractors, Montreal - Stucco Repair & Installation
- Stucco Siding, Granite & Grouting Contractors, Montreal
- Stucco Stone, Montreal
- Submarine Sandwich Restaurants, Montreal
- Substance Abuse Clinics, Montreal - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Substance Abuse Outpatient Clinics, Montreal
- Sugar Refiners, Montreal
- Suicide Prevention Service & Counseling, Montreal
- Suit & Coat Manufacturers, Montreal
- Support Services, Montreal
- Surgical Supplies & Equipment, Montreal
- Surgical Supplies, Instruments, Tools & Equipment, Montreal
- Surplus & Salvage Merchandise, Montreal
- Surveyor Services, Montreal - Surveying Service
- Surveyors, Montreal
- Surveyors Cargo, Montreal
- Sushi Restaurants, Montreal
- Sweepers & Scrubbers Industrial, Montreal - Sweeping Service
- Swimming, Montreal
- Swimming Lessons & Classes, Montreal
- Swimming Pool, Sauna & Spa Contractors, Montreal
- Swimming Pools, Montreal
- Swimming Pools & Equipment Manufacturers, Montreal
- Swimming Pools Contractors, Montreal - Install Inground - Above Ground Pools
- Swimming Pools Repair, Service, Supplies, Sale & Installation, Montreal
- Swimming Pools Supplies, Equipment & Accessories, Montreal
- Swimwear & Accessories Shops, Montreal - Water Sports Equipment
- Synagogues & Temples, Montreal
- Szechuan Restaurants, Montreal
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