- NewYork-Presbyterian Queens
- NexTec Group Inc.
- Nextel
- NHCAA Institute
- Niagara County
- Niagara Falls City School District
- Niagara Falls Memorial Medical Center
- Niagara Frontier Transportation Authority
- Niagara Mohawk Holdings
- Niagara Mohawk Power Corporation
- Nicholas Green Foundation
- Nicklaus Children's Hospital
- Nida Lighting
- Nieto Engineering, Inc.
- NIH
- NIH-NIAID-DAIT
- NikoNET
- Nine Zero, Boston, MA
- Nino Corporate Lodging Inc.-Nino and Associates Inc.
- Ninth District Opportunity
- NJ Puerto Rican Congress
- NJ Sharing Network
- NJSEA
- NL Industries Inc.
- NM Sports and Wellness
- NMT Medical
- NOA Medical Industries Inc.
- Noah's New York Bagels - All stores
- Nobel Learning Communities, Inc.
- Noble Drilling Corporation
- Noble Hospital
- Noble House Jewelry
- Nocatee Elementary
- NOCCR
- Noelker And Hull Associates, Inc.
- Noland Hospital Anniston
- Noland Hospital Birmingham
- Noland Hospital Dothan
- Noland Hospital Montgomery
- Noland Hospital Tuscaloosa
- Nolf Chrysler Dodge, Inc.
- Nolte
- Nomadic Display
- NOMOS Corporation
- Nonprofit Resources Inc
- Norad
- Nordstrom
- Noresco
- Norfolk Convention and Visitors Bureau
- Norfolk Southern Corporation