- Michigan Department of State
- Michigan Health and Hospital Association
- Michigan Medicine
- Michigan Primary Care Association
- Michigan Society of Association Executives
- Michigan State University
- Michigan Townships Association
- MicroAge
- Microchip Technology
- MICROMAIN Corporation
- Microsoft
- Microsoft Corporation
- Microtel Inn and Suites by Wyndham Anchorage Airport
- Microtel Inn Atlanta Airport
- Microtel Inn Atlanta-Smyrna
- Microtel Inn, Newport News
- Mid Atlantic Events Magazine
- Mid Coast Hospital
- Mid Coast Medical Group-Family Practice at Parkview
- Mid Coast-Parkview Health
- Mid-America Transplant Services
- Mid-Atlantic Renal Coalition
- Mid-Minnesota Family Practice Center
- Mid-South Gastroenterology Group-Bowden Surgery Center
- Mid-South Tissue Bank
- Mid-South Transplant Foundation
- Mid-State Health Center
- Mid-States Aluminum Corp
- Mid-States Aluminum Corporation
- Midcoast Energy Resources Inc., Transportation Group
- Middle East Institute
- Middlesboro ARH Hospital
- Middlesex Hospital
- Middlesex United Way
- Midhudson Regional Hospital of Westchester Medical Center
- Midlands, LLC
- Midstate Medical Center
- Midstates Bank, NA
- Midtown Community Health Center
- Midvale Boys and Girls Club
- Midvale Police Department
- Midway Chevorlet
- Midwest Bank Note Company
- Midwest Kidney Network
- Midwest One Financial Group
- Midwest Orthopedic and Specialty Hospital
- Midwest Physical Therapy and Sports Center
- Midwest Regional Medical Center
- Midwest Society of Association Executives
- Midwest Stamping and Manufacturing Inc.