- Mcm Parking
- Meals On Wheels Chicago
- Medinah Barber Shop
- Medline Transport
- Megalo Development
- Megan Doody
- Megan Gerdes
- Megan Glynn
- Megan Lee Designs
- Megan Mcgrath
- Megan Reed Design
- Megan Sauve Ceramics
- Meinka Bbs
- Mejuri (us), INC.
- Mekky Media
- Meli Cafe On Grand
- Meli Wraps
- Melissa Dixon
- Melissa Farnen
- Melissa O'brien Designs LLC
- Melissa Rickey
- Mendocino Farms
- Meow Dark
- Mercadito Chicago
- Mercer 113 / Point & Feather Chicago
- Merchandise Mart Properties, INC.
- Merchant & Rhoades
- Merchant Market
- Mercy Home For Boys And Girls
- Merger Industries INC.
- Merieux Nutrisciences
- Meroe
- Mesirow
- Mesirow
- Mesirow
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesirow Financial
- Mesmereyez
- Metro Parking Systems
- Metro Space, INC.
- Metromart
- Metropolitan 1
- Metropolitan Memorial Funeral Chapel
- Mezza
- Mi Kay Ng
- Mia Metz Music
- Miami Corporation Management, LLC
- Micaela Mascha
- Micah Miles
- Michael & Michael Hair
- Michael Best
- Michael David Klingenberger
- Michael Dimaggio
- Michael Dimaggio
- Michael Dimaggio
- Michael Kors
- Michael Mccafrey
- Michael Thomas Jr
- Michael Walters Advertising In
- Mid-america Carpenters Regional Council
- Midas Auto Service Experts
- Midland Indust
- Midway Wholesalers
- Midwestern Group LLC
- Mike Ditka's Restaurant
- Mila's Advanced Skin Care INC.
- Milani
- Mile Stone Crystals
- Millenium Cleaners
- Millennial Design Group-bac
- Millennial Mart
- Millennium Knickerbocker Hotel-nix
- Mimi's Kimbap LLC
- Mindset Creative LLC
- Minghin Streeterville
- Minko Pet LLC
- Minor Major Entertainment
- Mira Couture
- Mirai Sushi Gold Coast
- Mirasa
- Mireille's Studio
- Miriam Dubinsky
- Mist
- Mitchell Gold + Bob Williams
- Mitigation Professionals INC.
- Mixed Greens
- Mk Communications INC
- Mm. Lafleur INC.
- Mo Dearborn, LLC
- Mobil
- Mobil
- Mobili Mobel
- Modani Chicago LLC
- Mode Project
- Modern Wellness
- Moderne Living
- Modshop
- Moe's Cantina
- Mogadishu Restaurant INC.
- Mohop
- Mojo 330 N Wabash
- Molas4u
- Molly's Cupcakes River East
- Mom's Place - A Chicago Gathering Spot
- Momentum Group
- Momentum-na, INC.
- Momo Factory
- Mon Reve
- Monarch & Lion
- Moncler
- Mongerson Gallery, INC.
- Monicare Nannies And Household Staffing, INC.
- Monster Mop
- Montauk Chicago INC.
- Montgomery Cleaners
- Mood Nails
- Moore Poppin
- Moose Knuckles
- Moreish LLC
- Morgan Hooper
- Morgan, Birge & Associates INC
- Morrison Management Specialsts
- Morton's Of Chicago
- Motel Bar Chicago & Monty's Chicago
- Mother Hubbards
- Mother's First Venture LTD
- Mother's Too
- Moti Cafe
- Motorola Mobility LLC
- Move App Studio
- Move Sales, INC.
- Movement Lincoln Park
- Movement Med
- Moxy
- Mp Factor LLC
- Mr Beef
- Mr. J's
- Mr. Rooter Plumbing Of Lincoln Park
- Msc Carpentry
- Msds LLC
- Mtn Logistics
- Mts-mm LLC
- Muah Cotton Candy
- Mudbum
- Mulberry Marketing Communications
- Multi Latino Marketing Agency, INC
- Murasaki
- Museum Of Ice Cream
- Musick
- Mustard Seed
- Mworks Worldwide, INC.
- My Parking INC.
- Myeyedr.
- Myplanet Living Center LLC
- Myraj
- Mythical Smokes
- N/a
- N/a
- N/a
- N/a
- N/a
- N/a
- N/a
- N/a
- N/a
- N1 Athletics
- Nabeel Yaseen
- Nafari Moda LLC
- Naia Restaurant & Kafe Mera
- Nail Perfection & Foot Spa
- Nailacarte - River North
- Nails By Liz INC
- Nailtastic
- Nailtastic2
- Naked Voices, INC.
- Nancy Angelair
- Nando's Peri-peri
- Nando's Peri-peri
- Nari Beauty LLC
- Nat Tab LLC
- Nate Berkus Associates, INC.
- Nate Berkus Entertainment
- Nate Berkus Media
- Nathalie Loma
- Nathan Koenig
- National Association Of Realtors
- National Cable Communications
- National Collegiate Scouting Association, LLC
- National Headache Foundation
- National Shrine Of Saint Frances Xavier Cabrini, INC.
- National Student Leadership Conference
- Natural Thai Bodywork
- Navy Pier
- Navy Pier Store