- Muijistudio
- Mulch Consulting, LLC
- Murphy Rooftop Company
- Murphy's Bleachers
- Murphy's Inn
- Murphy's Parking, LLC
- Musashiya Ramen
- Muse Spirits
- Music Box Theatre
- Mvs Hair Salon By Oralia
- My Launch Box
- My Nail.com
- My Nail.com
- My Perfume House
- My Salon Suite
- My Wireless Il, INC.
- Myeyedr
- Mystery Street Recording Company
- N/a
- N/a
- N/a
- N/a
- N1 Aesthetics, LLC
- Naiboa Latin Store
- Nail Story
- Nailography
- Nails Art I
- Namaskar Yoga LLC
- Nan Ruvel Interior Design
- Nancy Huysman
- Nancy Paradiso
- Nancy's Home Of Stuffed Pizza
- Nando's Peri-peri
- Nano Sushi
- Nas Salon & Spa, INC.
- Natalie Dienstbach
- Natalie Walser
- Natasha Kaimakis
- National Runaway Safeline
- Native Foods Cafe
- Natural Healers Spa
- Natural Releaf LLC
- Naturel
- Naudi INC
- Naz's Halal Food
- Nb Spa
- Network Management Services INC
- Neva Hangry
- Nevin Farawi
- New Banh Mi & Co.
- New Generation LLC
- New Hope Spa
- New Hope Spa
- New Life Dry Cleaners And Laundry INC.
- New Life Spa
- New Modern Grill INC
- New Southport Fitness LLC
- New York Cleaners
- New York Market
- Newport Development Company
- Newtown Cleaners
- Next Door Movers
- Nextpoint INC
- Nibanaba LLC
- Nice Package Inc/ DBA The Ups Store #2745
- Nicholas Fee
- Nicholas Miles Petrus
- Nickknacks
- Nicole Rizzo
- Niczka.co
- Nisei Lounge
- Nlp Studio
- Noha & Associates INC
- Nola Cafe & Bar
- Nola Gems
- Noodles & Company
- Noori Chicken Chicago
- Nora Cole
- Norcross Interiors
- Nori & Wasabi
- Nori Chicago
- Northalsted Home Transformations LLC
- Not A Hair In The World
- Not Just Cookies Bakery
- Nuance Cleaners
- Nuts On Clark INC
- Oak & Honey
- Oasis Fresh
- Oberweis Dairy
- Oberweis Dairy, INC
- Obie Art
- Obvious Shirts
- Ocean Nails Spa
- Off Color Brewing
- Off The Ground Dance Studio
- Office Depot INC #225
- Oh My Nails
- Okashi
- Old Crow Smokehouse
- Old Teriyaki
- Oleksii Budz
- Olha Zhybak
- Olive Black Chicago
- Olive Mountain Grill
- Olive Press Media
- Olor Coffee
- Om On The Range Yoga Studio
- Omakase On Me
- Omar Rmz, LLC
- Omni Handyman Services LLC
- On The Route Bicycles Corp
- Operationally LLC
- Ophidian Tattoo Gallery
- Orange Theory Fitness
- Orangetheory Fitness
- Orbit Media Studios INC
- Original Pancake House
- Original Tombola LLC
- Osco Drug Store # 3514
- Osmium Coffee Bar
- Otherworld Theatre
- Our Lady Of Mount Carmel
- Output On Clark Street
- Over Rice'n Bread, Corp.
- Owens Famous
- P S Bangkok Restaurant INC
- Painless Waxing Boutique
- Paisley & Elm, LLC
- Paladin Urgent Care
- Palm Beach Tan - Chi 012
- Pan & Grill Coney Island
- Pancake Cafe / Aji
- Pancake Cafe / Aji Sushi
- Panda Express #5089
- Panes Bread Cafe
- Pansy's Pottery
- Papacito's Mexican Grille
- Paper Source
- Paper Source
- Paradise Pet Salon & Spa Too! INC.
- Park Market Foods
- Park Place Market
- Parking Chi
- Parkplus
- Parlour Post
- Parrots Bar & Grill
- Passport Health
- Past & Prologue
- Pastries By Pat
- Pathways Advisory
- Patrick Doerr
- Patrick Hemsworth
- Paulina Market
- Pbaldwin Designs
- PC Towing And Recovery LLC
- Pdb Productions LLC
- Pearl Vision
- Pearlcare Staffing Solutions, LLC.
- Pedestrian Coffee
- Pedro Agudo
- Peebles LLC
- Peerless Imported Rugs INC
- Peking Chinese Food
- Pelly's Liquors
- Penny's Roscoe
- Perfect Eyebrows
- Personal Chef Roberto Vergara LLC
- Perspire Sauna Studio Chicago Lakeview
- Pescadero Seafood & Oyster Bar
- Petco # 696
- Pete's Heating And Cooling
- Pets First Veterinary Clinic, LLC
- Petsmart, INC. #2525
- Peyton Rose Rogers
- Phenomenal Finance
- Philly's Best
- Pho Spicier Thai Cuisine
- Pho's Thai Cuisine
- Phobo Sushi LLC
- Phoenix Electric Land LLC
- Phoenix Electric Manufacturing Company
- Phoenix Electric Mfg Co
- Pianko
- Pickled Prince
- Pilates Artistry, INC.
- Pilot Project Brewing
- Pine Cleaners
- Pine Grove Patchworks
- Ping Pong
- Ping Spa
- Pink Kitty Princess
- Pink Rhino Tattoo LLC
- Pink Spa INC.
- Pinkal's Threading & Waxing Salon
- Pinp, INC
- Pinpoint Collective
- Pioneer Parking, INC.
- Pioneer Studios
- Pipes And Stuff
- Pita Queen