- Montgomery County Youth Services
- Montgomery County-MD
- Montgomery General Hospital
- Montreat College
- Montrose Memorial Hospital
- Moog Aircraft Group Salt Lake Operation
- Moog, Inc
- Moore Business Communications Services
- Moore Norman Technology Center
- Moore North America
- Moose Lodge
- Morehead State University
- Morehouse School of Medicine
- Morgan and Keegan and Co., Inc.
- Morgan Corp.
- Morgan County ARH Hospital
- Morgan Stanley
- Morgan Stanley
- Morgan Stanley Dean Witter
- Moriah Consultants
- Morningside House Nursing Home
- Morningside Ministries at Chandler Estate
- Morningside Ministries at Menger Springs
- Morningside Ministries at the Manor
- Morningside Ministries at the Meadow
- Morningside Ministries Senior Living Communities
- Morovis Community Health Center
- Morris College
- Morris County Organization for Hispanic Affairs
- Morris Hospital
- Morrison Institute of Technology
- Morrison Senior Dining
- Morristown Area Chamber of Commerce
- Morristown Medical Center
- Morrow County
- Morrow County Hospital
- MORS
- Mortara Instrument, Inc
- Mortenson, Matzelle and Meldrum
- Mortgage Bankers Association
- Morton Hospital
- Morton Plant Hospital
- Morton Plant Mease Foundation
- Morton Plant North Bay Hospital
- Mosaic
- Mosaic Life Care at St. Joseph
- Mosaic LTD
- Moses Lake Community Health Center
- Moses Taylor Hospital
- Moss Memorial Health Clinic