| Potsdam Humane Society Inc. | | | | Pets & Veterinary | (315) 265-3199 | | | | |
| Potsdam Food Coop | | | | Restaurant Food & Beverage | (315) 265-4630 | | | | |
| Potsdam Dance Company | | | | Arts, Culture, & Entertainment | (315) 274-9346 | | | | |
| Potsdam Center For Innovative Dental Technologies | | | | Health Care | (315) 265-3377 | | | | |
| Pinto, Mucenski, Hooper, Vanhouse & Co.CPAS, P.C. | | | | Finance & Insurance | (315) 265-6080 | | | | |
| Persone Staffing | | | | Business & Professional Services | (315) 262-6200 | | | | |
| Penski Staffing, A Cortech Co. LLC | | | | Business & Professional Services | (315) 265-8860 | | | | |
| Northwestern Mutual Life Melchior Agency | | | | Finance & Insurance | (315) 265-8334 | | | | |
| Northern New York Community Foundation | | | | Non-Profits, Community & Civic Organizations | (315) 782-7110 | | | | |
| Northern Insuring Agency, Inc. | | | | Finance & Insurance | (315) 769-2404 | | | | |
| North Country This Week | | | | Advertising & Media | (315) 265-1000 | | | | |
| North Country Savings Bank | | | | Finance & Insurance | (315) 265-2300 | | | | |
| Nikki Coates & Associates | | | | Real Estate, Moving & Storage | (315) 265-4303 | | | | |
| National Grid | | | | Public Utilities & Environment | (800) 642-4272 | | | | |
| Morgan Stanley | | | | Finance & Insurance | (315) 265-6300 | | | | |
| Mcduff's Pub & Grill | | | | Restaurant Food & Beverage | (315) 261-4089 | | | | |
| Maxfield's | | | | Restaurant Food & Beverage | (315) 265-3796 | | | | |
| Maple Run Emporium | | | | Shopping & Specialty Retail | (315) 274-0102 | | | | |
| Mama Lucia's | | | | Restaurant Food & Beverage | (315) 265-0475 | | | | |
| Mahoney's Auto Mall, Inc. | | | | Automotive & Marine | (315) 265-1850 | | | | |
| MacFadden Dier Leonard Insurance | | | | Finance & Insurance | (315) 265-3246 | | | | |
| Lavigne's IGA Potsdam | | | | Shopping & Specialty Retail | (315) 274-0355 | | | | |
| Lavalle Transportation | | | | Transportation | (315) 268-0800 | | | | |
| Labella Associates, DPC | | | | Business & Professional Services | (315) 268-1338 | | | | |
| Knight & Associates Physical Therapists | | | | Health Care | (315) 265-7917 | | | | |