- Safe & Vault, Ottawa
- Safety & Security Systems & Consultants, Ottawa
- Safety Equipment & Supplies, Ottawa
- Safety Training Schools, Ottawa
- Sailboards Retail, Ottawa
- Sailing Instructions, Ottawa
- Sales & Marketing Consultant, Ottawa
- Salesperson, Ottawa
- Salvage Yards, Ottawa - Auto, Motorcycle, Boat, Trucks, etc
- Salvation Army, Ottawa
- Sand Gravel & Aggregate, Ottawa
- Sandblasting, Ottawa - General Contractors
- Sandwich Shop Restaurants, Ottawa
- Satellite & Cable TV Equipment & Systems Repair & Service, Ottawa
- Satellite Communication Downlinking & Uplinking, Ottawa
- Satellite Dish Antennas & Equipment Dealers, Ottawa
- Satellite TV Service, Ottawa
- Savings & Loan Associations, Ottawa
- Savings Banks, Ottawa
- Sawmill, Paper & Woodworking Supplies, Machinery & Equipment, Ottawa
- Scaffolding & Aerial Lifts, Ottawa
- Scales Retail, Ottawa
- Scholarships & Financial Aid, Ottawa
- Schools Montessori Instruction, Ottawa
- Scientific & Laboratory Equipment & Instruments, Ottawa
- Scientific & Technical Consultants, Ottawa
- Scientific Equipment, Ottawa
- Scientific Equipment & Services, Ottawa
- Scientific Equipment & Supplies, Ottawa
- Scientific Services, Ottawa
- Scientology Churches, Ottawa
- Scrap & Waste Machinery, Ottawa
- Scrap & Waste Materials, Ottawa
- Scrapbooks & Scrapbook Supplies, Ottawa
- Screen Printing, Ottawa
- Screens Doors & Windows, Ottawa
- Seafood Restaurants, Ottawa
- Seals Notary & Corporation, Ottawa
- Search & Navigation Equipment Manufacturers, Ottawa
- Search & Rescue, Ottawa
- Searchers Of Records, Ottawa
- Secondary Schools, Ottawa
- Secretarial & Court Reporting Services, Ottawa
- Security & Commodity Exchanges, Ottawa
- Security & Surveillance System & Equipment, Ottawa
- Security Alarm Systems - Home & Business, Ottawa
- Security Brokers & Dealers, Ottawa
- Security Consultants, Ottawa
- Security Control Systems & Monitoring, Ottawa - Polygraph, Lie Detector, CCTV, Fire Sensor Equipment, Etc
- Security Guard & Patrol Service, Ottawa - Bodyguard, Guard Dogs, Etc
- Security Investigative Services, Ottawa
- Security Services, Ottawa
- Sedation Dentistry, Ottawa
- Self Defense Programs, Ottawa
- Seminars & Workshops, Ottawa
- Senior Citizens Housing, Ottawa
- Senior Citizens Information & Services, Ottawa
- Senior Citizens Service & Health Organizations, Ottawa
- Septic Systems Installation & Repair, Ottawa
- Septic Tank Pumping & Cleaning, Ottawa - Septic Systems
- Septic Tank Site Evaluation & Design Consultants, Ottawa
- Septic Tanks & Septic Systems Contractors, Ottawa - Installation, Repair, Service, Cleaning & Pumping Septic Tanks
- Septic Tanks & Systems, Ottawa - Wholesale, Dealers & Suppliers
- Septic Tanks & Systems Contractors & Designers, Ottawa
- Service & Gas Station Equipment & Services, Ottawa
- Service Establishment Supplies & Equipment, Ottawa
- Service Industry Manufacturers Machinery, Ottawa
- Sewer & Drain Cleaning & Repair, Ottawa - Drain Cleaner & Installation Services
- Sewer Construction Contractors, Ottawa - Sewer Line, Pipe Installation & Repair Services
- Sewer Line Inspection & Maintenance, Ottawa
- Sewing & Yarn Stores & Supplies, Ottawa
- Sewing Contractors, Ottawa
- Sewing Machine Repair & Service, Ottawa
- Sewing Machines, Equipment & Supplies, Ottawa
- Sewing Thread, Ottawa
- Sex Counseling & Therapy, Ottawa
- Sharpening Service, Ottawa
- Sheet Metal Contractors, Ottawa - Sheet Metal Fabrication
- Sheet Metal Fabricators & Ductwork Contractors, Ottawa
- Shelving & Shelves, Ottawa - Metal, Steel, Wire & Glass Shelving Units & Storage - Wall Shelves
- Shelving Equipment, Ottawa
- Ship & Boat Building & Repairing, Ottawa
- Shipping Companies, Ottawa
- Shipping Service, Ottawa
- Shirts & T-Shirts, Ottawa
- Shirts Wholesale & Retail, Ottawa
- Shoe Repair & Shoeshine Parlors, Ottawa
- Shoe Repair Shops, Ottawa
- Shoe Store - More, Ottawa
- Shoe Stores, Ottawa - Mens, Womens & Kids Shoes
- Shopping & Shopping Services, Ottawa
- Short Term Business Credit Institutions, Ottawa
- Shutters - Interior & Exterior, Ottawa - Wood, Vinyl, Window, Plantation Shutters, etc
- Siding Contractors, Ottawa - Vinyl Siding, Wood, Metal & Aluminum Siding Contractors - Installation & Repair
- Siding Materials, Ottawa
- Sightseeing Tours, Ottawa
- Sign Equipment & Supplies, Ottawa
- Signs, Ottawa
- Silk Screen Printing, Ottawa
- Silkscreen Printing, Ottawa
- Silversmiths & Goldsmiths, Ottawa
- Silverware & Plated Ware, Ottawa
- Singing & Vocal Training Schools, Ottawa
- Skateboards & Equipment Shops, Ottawa - Skateboarding Supplies
- Skating Rink & Hockey Operation Services, Ottawa
- Skating Supplies, Ottawa - Ice, Inline, Speed, Figure & Roller Skates
- Ski & Snowmobile Clubs, Ottawa
- Ski Equipment & Supplies Shops, Ottawa - Skiing Helmets, Goggles, Clothes, Boots, Gear & Accessories
- Skin Care & Cosmetology Salons, Ottawa
- Skin Care Products & Treatments, Ottawa
- Skylights, Ottawa - Skylight Shades, Blinds, Covers & More
- Sleds, Snowboards & Snowshoes Shops, Ottawa - Snow Sleds, Toboggans, Helmets, Boots, Goggles, Clothing, Gear & More
- Sleep Disorders Treatment & Information Centers, Ottawa
- Sleep Doctors, Ottawa - Specialists, Physicians & Surgeons (Sleep Medicine)
- Small Appliances, Ottawa
- Smoking Cessation Treatment Centers & Information Services, Ottawa
- Smoothie Restaurants, Ottawa
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- Snack Foods, Ottawa
- Snacks & Desserts, Ottawa
- Snow Removal Services, Ottawa - Snow Plow Service
- Soaps & Cosmetics, Ottawa
- Soccer Clubs, Ottawa
- Social Clubs & Organizations, Ottawa
- Social Consultants, Ottawa
- Social Service Organizations Volunteer Services, Ottawa
- Social Services & Welfare, Ottawa
- Social Workers & Services, Ottawa
- Societies & Foundation Associations, Ottawa
- Sod & Sodding Service, Ottawa
- Sod Farms, Ottawa
- Solar Equipment, Ottawa
- Solariums & Garden Rooms, Ottawa
- Sound Systems, Microphones & Equipment, Ottawa
- Soup & Salad Restaurants, Ottawa
- Space Heaters, Ottawa
- Space Planning, Ottawa
- Spanish Restaurants, Ottawa
- Special Dies Tools Jigs & Fixtures Manufacturers, Ottawa
- Special Education & Care, Ottawa
- Special Events & Party Supply Rental, Ottawa
- Special Events Photographers, Ottawa
- Special Interest Schools Or Instruction, Ottawa
- Speciality Food Stores, Ottawa
- Specialty Animal Services, Ottawa
- Specialty Communication Companies & Services, Ottawa
- Specialty Rental Services, Ottawa
- Specialty Stores, Ottawa
- Speech & Hearing Specialists, Ottawa
- Speech & Language Therapy, Ottawa
- Speech Pathologists, Ottawa - Speech & Language Therapy
- Spiritual Church, Ottawa
- Sporting Goods Equipment Rental, Ottawa
- Sporting Goods Stores, Ottawa
- Sports & Recreational Services, Ottawa
- Sports Bars & Lounges, Ottawa
- Sports Clubs, Ottawa
- Sports Consultants, Ottawa
- Sports Medicine, Ottawa - Doctors, Physicians & Surgeons
- Sports Photographers, Ottawa
- Sports Promoters & Managers, Ottawa
- Sports Promotions & Special Events, Ottawa
- Sportswear Clothing Stores, Ottawa - Sports Clothes
- Sportswear Manufacturers, Ottawa
- Sportswear Wholesale, Ottawa
- Spraying Booths & Equipment, Ottawa
- Springs Automotive, Ottawa
- Sprinkler Alarm Systems, Ottawa - Fire Sprinkler Systems
- Squash Courts, Ottawa
- Staffing & Support Services, Ottawa
- Stainless Steel, Ottawa
- Stairs & Railings Contractors, Ottawa - Metal & Wood Stairs, Spiral Staircase & Stair Railing - Installation & Repair
- Stairs & Steps, Ottawa
- Stairs, Balcony, Terrace & Steeple Contractors, Ottawa
- Stamp Collecting & Coin Dealers , Ottawa
- State Government, Ottawa
- Stationery & Office Supplies, Ottawa
- Steak House Restaurants, Ottawa
- Steel & Metal Goods, Ottawa - Steel Distributors
- Steel Detailers, Ottawa
- Steel Fabrications Specialties, Ottawa
- Steel Fabrications Steel Joists Manufacturers, Ottawa
- Steel Frame Manufacturers, Ottawa
- Steel Manufacturers, Ottawa
- Steel Mills & Blast Furnaces, Ottawa
- Steel Reinforcing Fabricators, Ottawa
- Steel Work Contractors, Ottawa
- Stereo, Audio & Video Equipment Dealers & Stores, Ottawa
- Stock & Bond Brokers & Dealers, Ottawa
- Stocks & Bond Brokers, Ottawa
- Stone & Rock Quarry, Ottawa - Gravel Pit, Shale, Granite, Limestone, Crushed Rock, etc
- Stone And Glass Products, Ottawa
- Stone Setting Contractors, Ottawa
- Storage & Closet Equipment Supplies & Materials, Ottawa
- Storage Batteries Manufacturers, Ottawa
- Store & Retail Fixtures & Display Manufacturers, Ottawa
- Store Fixtures, Ottawa
- Store Fixtures & Display Equipment, Ottawa
- Store Fronts, Ottawa - Storefront
- Stoves & Furnace Equipment, Ottawa - Fittings & Repair Parts
- Stoves, Ovens, Ranges & Cooktops, Ottawa
- Strapping & Strapping Equipment, Ottawa
- String Instruments Manufacturers, Ottawa
- Structural Steel Erection, Ottawa
- Stucco Siding Contractors, Ottawa - Stucco Repair & Installation
- Stucco Siding, Granite & Grouting Contractors, Ottawa
- Stucco Stone, Ottawa
- Submarine Sandwich Restaurants, Ottawa
- Substance Abuse Clinics, Ottawa - Alcoholism, Addiction & Drug Abuse Treatment Centers
- Substance Abuse Outpatient Clinics, Ottawa
- Sugar Refiners, Ottawa
- Suicide Prevention Service & Counseling, Ottawa
- Sun Microsystems Computers, Ottawa
- Sunroom & Solarium Construction Contractors, Ottawa
- Sunrooms & Solarium Construction Contractors, Ottawa - Build & Repair
- Sunrooms, Greenhouses, Solariums & Atrium Builders, Ottawa - Build & Repair
- Support Services, Ottawa
- Surgical Supplies & Equipment, Ottawa
- Surgical Supplies, Instruments, Tools & Equipment, Ottawa
- Surplus & Salvage Merchandise, Ottawa
- Surveyor Services, Ottawa - Surveying Service
- Surveyors, Ottawa
- Sushi Restaurants, Ottawa
- Sweepers & Scrubbers Industrial, Ottawa - Sweeping Service
- Swimming, Ottawa
- Swimming Pool Covers & Enclosures, Ottawa
- Swimming Pool, Sauna & Spa Contractors, Ottawa
- Swimming Pools Contractors, Ottawa - Install Inground - Above Ground Pools
- Swimming Pools Repair, Service, Supplies, Sale & Installation, Ottawa
- Swimming Pools Supplies, Equipment & Accessories, Ottawa
- Swimwear & Accessories Shops, Ottawa - Water Sports Equipment
- Swiss Restaurants, Ottawa
- Synagogues & Temples, Ottawa
- Synthetic Resins & Rubber, Ottawa
- Szechuan Restaurants, Ottawa
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