- Slug Percussion
- Scott's Drum Center
- Strunal Schönbach
- Super Sensitive Musical String Co
- Snark
- Stradella Reeds
- Swiss Picks
- SwirlyGig
- SpiderCapo
- Spectraflex
- Solomon Mics
- Sapore Wood Ovens
- Showplace Rent-to-Own
- Sherman Furniture
- Smell Zapper
- Sunshine Beverages
- Sal's Beverage World
- Shady Oaks Farm
- Souda
- Snubbed Records
- Seattle Coffee Works
- Sew Much Moore
- Snaps Tools
- Studio Carta
- Sonoma-Cutrer
- Snoqualmie
- Santa Rita Wines
- Santa Barbara Winery
- St. Francis Vineyards & Winery
- Sunrising Bedding
- Shepherd's Dream
- Sherwood Engineering
- SakariMotorsports.com
- Street Track Life
- Spirit Games
- Surprise Gift
- Spruce Toronto
- Scrapbooking Coach
- Schneider Weisse
- So Shape
- Shepherd Hardware
- Stacy's
- Seek & Swoon
- Shark Helmets
- SmartBidet
- StickerTalk
- SmartBlend
- Sock Tabs
- SLIPLO
- Steele Racing Products
- Sam & Nala
- Shibui Knits
- Studio Gears
- Seedo
- Seep
- SmartBox
- Springline Coffee
- Stash Tea Company
- Seattle Gourmet Foods
- Suzie's Organics
- Saucy Lips Foods
- Stella Cheese
- Sunscoop
- SimpleLab
- Steel Straw
- Schweppes
- Small Giants
- Sboly
- STILLHOUSE
- Stoves
- Ship It Appliances
- SproutRite
- Subhlaxmi Grocers
- Shastha Online
- Spanish Table
- Superior Farms
- Steaz
- Steepologie
- SK Graphix
- Super Team Deluxe