- Milito's Mobil
- Milk Bar LLC DBA The Shore Club Chicago
- Millie's Supper Club LLC
- Mingova LLC
- Mini Mall Storage
- Mishelle's Nail Spa
- Miskas
- Miso & Nori
- Mitazi Salon And Boutique
- Mitchell & Co.
- Mkm Consulting INC
- Mo's Asian Bistro
- Mochinut
- Modern Parking Services
- Molly Mellon
- Molly's Cupcakes LLC
- Mon Ami Gabi
- Mon Reve Chicago
- Monica + Andy
- Moon Rabbit Lincoln Park
- Moon Star Kitchen & Bar
- Moonbowls
- Moose Sports Surfaces, LTD.
- Moosejaw
- Morgan Cook
- Morgan Maccartney
- Moscot
- Mosiac Management Group
- Mothlight Pictures INC.
- Move Your Mind Mental Performance LLC
- Mr Vape & Smoke
- Mr. Submarine
- Ms. Couture
- Ms. Manicure LLC
- Mugsy
- My Gym Chicago
- My Spa
- My Store
- Myeyedr. Optometry Of Illinois, LLC
- N Route LLC
- Nabi Nail INC
- Nachole Hopkins
- Nadu
- Nail Envy INC.
- Nail House
- Nails Boutique
- Nancy Krause Floral Design & Garden Antiques
- Natalie Snizaski
- Natalie Snizaski
- National Distribution Systems
- National Shrine Of Saint Frances Xavier Cabrini
- Natural Beauty Projects LLC
- Natural Selection
- Natuzzi Americas, INC
- Nealshow Productions
- Nearly New
- Neighborfix LLC
- Neil Negri
- New Balance Lincoln Park
- New Elephant Resale Shop Of Chicago, NFP
- New Food Studio
- New Nail Fairy
- New York Pizza Style LLC
- Newsweb LLC
- Next|health
- Nicole Hee Lizotte
- Nine Classic Thai Cuisine
- Noema
- Noodles & Company
- Noodles In The Pot
- Noodles In The Pot, INC
- Nookies On Wells INC
- Nookies Too, LTD.
- North Buena Deli & Wine
- North Elston Wine & Spirits LLC
- North Pond Cafe
- Nothing Bundt Cakes
- Novacare Kids
- Nuts Over Dates
- Ny Kids Club
- Oasis Face Bar Wicker Park
- Ocotpus
- Off Premise
- Officemax INC #838
- Oishii Asian & Ramen Hub
- Okto Partners LLC
- Old Navy Store #5768
- Old Pueblo Cantina
- Old Town C Stores & Smoke
- Old Town Triangle Association
- Old Town Valet Cleaners
- Oliang Cafe Chicago
- Olivine Interiors
- Olor
- Olor Coffee
- One After 909
- Oracle Visions
- Orange Shoe Personal Fitness Lincoln Park
- Orange Theory Fitness
- Orange Theory Fitness
- Orangetheory Fitness Lincoln Park
- Organized 2 Ways LLC
- Osco Drug #0202
- Ott Convenience
- Oui Chef
- Over/under Sports Bar Chicago
- Ovme
- Oxygene Shop
- Oz Animal Hospital
- P S Nails
- Palazzo LTD
- Palm Beach Tan
- Panda Express #1975
- Panera Bread #6393
- Paper Plane Pizza
- Paper Source
- Paper Tiger Cafe
- Parachute Home, INC.
- Paramount Cleaners
- Parennial Golf
- Paris312
- Park West Ceramics
- Park West Cooperative Nursery School
- Park West Theater
- Parkview Grocer
- Parkwest Liquor
- Parkwest Liquors And Smoke Shop
- Parlay Lincoln Park
- Pars Cove East
- Parson's Chicken & Fish
- Pasta Palazzo
- Pastafi
- Pat's Pizzeria
- Patagonia
- Patrick O'connell
- Patti Gilford Fine Arts
- Paul O'connor Consulting
- Pause Wellness Studio
- Paws Chicago
- Pearl's Nails Salon
- Pearle Vision
- Peet's Coffee & Tea
- Pegasus Protein Bar
- Peggy Notebaert Nature Museum
- Peggy Shapiro Graphic Design, INC.
- Pelle Sana Salon
- Peony Health Coordination
- Pequod's Pizza
- Peruvian Connection, LLC
- Pet Grooming Salon
- Petco #869
- Peter Breitlander
- Pga Tour Superstore
- Phabulous Foods LLC
- Pharmaca Integrative Pharmacy
- Philly Bros
- Philz Coffee
- Pilates Plus 2, INC.
- Pilatesville LLC
- Pinky Nail Lounge
- Pizza Capri / Zig Zag Kitchen
- Pizza Nostra Chicago
- Platinum Homes Development Corporation
- Play
- Play It Again Sports
- Play2day
- Pocket Puppies Boutique, INC.
- Polish Muse
- Pooch Hotel Lincoln Park
- Pop Up Bagels
- Porkchop
- Posy Rae
- Potbelly Sandwich Works
- Pour Decisions
- Power Yoga Chicago LLC
- Practice Chicago LLC
- Premier Catering & Events LLC
- Prenatal Fit
- Prescott Parents
- Pretty Cool Ice Cream
- Printer's Row Coffee Company
- Printex Corporation
- Professor Pizza
- Proper Pizza Chicago, INC.
- Prost
- Protein Bar
- Provar Technologies
- Ps Nails
- Public Storage
- Puja Desai
- Punch Bowl LLC
- Punt & Plume
- Pure Barre Lincoln Park
- Pure Barre Lincoln Park
- Pure Green LP
- Pure Serenity Spa
- Pure Serenity Spa
- Pyar & Co.
- Qdoba Company Restaurants LLC
- Qdoba Mexican Eats #2628