- 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
- MossRehab
- Motel 6 Van Horn
- Motel 62 Eureka Springs
- Mothers Working, Inc.
- Motor City Auto Center - Bakersfield
- Motorola
- Motorola
- Motta's Advertising Specialties Dist.
- Mount Carmel East
- Mount Carmel Grove City
- Mount Carmel New Albany
- Mount Carmel St. Ann's
- Mount Carmel West
- Mount Desert Island Hospital
- Mount Nittany Medical Center
- Mount Sinai
- Mount Sinai Beth Israel
- Mount Sinai Brooklyn
- Mount Sinai Hospital
- Mount Sinai Medical Center