- Memphis Redbirds Baseball Foundation
- Memphis Regional Chamber
- Memphis-Shelby County Health Dept.
- Mena Regional Health System
- Menifee Valley Medical Center
- Mennen Medical
- Mental Health Network
- Mental Retardation and Developmental Disabilities Administration
- Merakey Allegheny Valley School
- Mercedes Benz Chezik Sayers
- Mercer County Association of Realtors
- Mercer County Community Hospital
- Mercer County Hispanic Association
- Mercer Human Resource Consulting
- Mercer University School of Medicine
- Merchant Bank
- Merchant Data Systems
- Merck
- Merck Research Laboratories
- Mercy Allen Hospital
- Mercy Clinic Cardiology - Fort Scott
- Mercy General Hospital
- Mercy Gilbert Medical Center
- Mercy HCA
- Mercy Health - Anderson Hospital
- Mercy Health - Clermont Hospital
- Mercy Health - Fairfield Hospital
- Mercy Health - Jewish Hospital
- Mercy Health - Kings Mills
- Mercy Health - St. Vincents Medical Center
- Mercy Health - Tiffin Hospital
- Mercy Health - West Hospital
- Mercy Health - Willard Hospital
- Mercy Health Partners-Springfield
- Mercy Health Partners-Toledo
- Mercy Health Saint Mary's
- Mercy Health St. Rita's
- Mercy Health System
- Mercy Health System of PA
- Mercy Health-West Michigan
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital
- Mercy Hospital - Allina Health
- Mercy Hospital - Unity Campus
- Mercy Hospital Berryville
- Mercy Hospital Booneville
- Mercy Hospital Downtown
- Mercy Hospital El Reno