- Rosati's Pizza
- Rose By Oo LLC
- Rose Exterminator Co.
- Rosie's Cleaning Service
- Rotating Market
- Round Two Chicago
- Royal Palms Shuffleboard Club
- Royalty Reliance Studio
- Royce+reign INC.
- Rrg Development
- Rsc
- Rsvp Gallery, LLC
- Rt INC.
- Ruben's Unisex
- Ruby Room
- Ruca Foodservice, LLC
- Rudy's Ramen
- Rumi Grill
- Rush Physical Therapy
- Ruum, INC.
- Ryan Davies LLC
- Ryan Hutt
- Ryna Jerrick Hair Artistry
- S & L Family Renovations
- S W C, I INC.
- S.g.c. Transportation, L.L.C.
- S.m.a.r.t. Golf & Fitness Instruction
- S3g Advisors LLC
- Sa'moto
- Sabe A Zulia
- Sabroso Breakfast & Dinner
- Safelite Fulfillment, INC.
- Saint Alfred
- Saint Elizabeth Hospital
- Saints Volodymyr And Olha Ukrainian Catholic Parish
- Salerno's
- Salmans & Associates INC
- Salon 1645
- Salon 833
- Salon Aster LLC
- Salon Hex LLC
- Salon Lofts
- Salonchick
- Salsa Picante
- Salsachicago.com
- Salt Fitness Chicago
- Salt Shed
- Saltmara Wicker Park
- Salvage One
- Sam The Concrete Man North Chicago
- Sams Auto Mart INC
- Samson
- San Soo Korean Bbq
- San Studio Hair-skin & Med-spa Services
- Sana Vita Studio
- Sando Street
- Santa Klorina LLC
- Santiago Food Mart
- Sara's Cocina
- Sarah Burch
- Sari's Restaurant
- Sarima Cafe
- Sarwat Hashmi
- Sbk Dog Club
- Sbo Buzz
- Scadron Outdoor Advertising
- Schiller Development, INC.
- Schoolhouse Kitchen + Studio
- Schooner Learning Academy
- Schwa
- Schwartz Eye Care
- Scooterworks Holdings LLC
- Scotch & Soda
- Scott Bunner
- Scott Rassin
- Scout Showroom
- Se E. Too Clothing
- Seadog Sushi Bar
- Sean M. Love
- Sean O'looney
- Seek Vintage Wares & Apparel
- Seekrseer Productions LLC
- Segnatore
- Selfreliance Association
- Semicolon Bookstore
- Seoul Stick
- Seoul Taco
- Seoulspice
- Seventeen Nails
- Sew & Glow
- Sgd So Gong Dong Wicker Park
- Sgd Wicker Park
- Shaddaiish LLC
- Sharina Alice Lasley
- Shawarma Garden
- Shear Conviction
- Sheep Cult Comics
- Sheerid, INC.
- Sheila Nagorny
- Shell
- Shift Transit, LLC
- Shine On Group, INC.
- Shinya Grill & Bar
- Shoes Center
- Shokolad Pastry & Cafe
- Shorewood Studios
- Shot Of Art Chi
- Show Crew Network
- Shred415
- Shree Threading Studio
- Shuga Records INC.
- Siane Cleaners
- Siddha Yoga Meditation In Chicago
- Sigma Surgical Supply Corp.
- Signal Records
- Significant Solutions/the Hair Historian
- Silli Kori
- Silli Kori Thai
- Silver Moon
- Simplified Foods, LLC
- Sine Qua Non Iv, LTD
- Sipi Metals Corp
- Sister Lavender Nail & Spa, INC.
- Sl Spa Angelic
- Sloane Henning
- Slot Rocks LLC
- Small And Mighty Creative
- Small Cheval
- Smash Jibarito
- Smoke & Snack Garden
- Smoke Anytime
- Smoke Daddy
- Smoke Depot
- Smoke Times
- Smokepost
- Smokepost
- So Beauty Studio
- Soardist USA
- Soccer House
- Sogna Di Vita
- Soho Atelier
- Soiree Bistro
- Sol Chicago
- Sola Salon Studios Of Wicker Park
- Solidcore
- Solstice Heating And Cooling, INC.
- Solving It International, INC
- Someoddpilot
- Somie Beauty
- Sona Chicago Art Gallery
- Sophie Babcock
- Sorelle
- Soto Heating & Cooling
- Soule To Soule Chicago
- Sound Investment
- Sound Investment Av Dept
- Sound Obsession
- Sound Specialists INC
- Source And Design INC.
- Sourced Craft Cocktails
- South Loop Loft
- South Side Control Supply Co.
- Southern.beauty.inked
- Southside Electrical Distributors, INC.
- Sowa Sanctuary
- Spa Soak
- Spa Soak INC
- Spa Social
- Space 1858
- Space Oddities Chicago
- Space Oddities Chicago
- Space Time Love
- Spaderma Wicker Park, INC.
- Spark'd
- Speakeasy Custom Tattoo
- Spears Furnishing
- Special Olympics Illinois
- Spectrum Studios LLC
- Speedy Gonzalez Messenger Service
- Spellbound Games
- Spiegelberg Landscape Design INC.
- Spin
- Spinnng J
- Spiritsciencemedicine
- Spiritual Botanica Shop
- Spiritualscents
- Sportsmans Club
- Spot!
- Spotlight Automotive INC
- Sprout Chicago LLC
- Sprout Home
- Spudnik Press Cooperative
- Spynergy Wicker Park
- Squasht By Les
- St Nicholas Ukrainian Catholic
- St. Helen Church/school
- Stamper Cheese Company, INC.
- Standard Bar & Grill
- Standard Parking
- Standard Steel & Wire