- Senior Information & Assistance
- Senior Solutions
- Seniors Only Financial
- Seniors United for Nutrition
- SENO Formal Wear
- Sensation
- Sensational Hair
- Sensible Car Rental
- Sentinel Real Estate Corporation
- Sentinel Title Corporation
- Sentra Securities
- Sentry Cleaners
- Sentry Food Stores
- Sentry Food Stores - Food Stores
- Sentry Insurance
- Sentry Management
- Sentry Self Storage
- Seoul Barber Shop
- Seoul Restaurant
- Sephora
- Sequatchie Concrete Service
- Serenity
- Serenity House
- Serenity Massage
- Serenity Salon
- Serenity Salon & Spa
- Serenity Spa
- Serta Mattress
- Servall Company
- Servco
- Service
- Service America Corporation
- Service America Heating and Air Conditioning
- Service Auto Parts
- Service By Air
- Service Cleaners
- Service Distributing
- Service Experts
- Service Express