Alphabetical company index for letter/character "M", page 41 of 76
- Merrick Union Free School District
- Merrill Area School District
- Merrill Community Schools
- Merrill Lynch & Co. Inc.
- Merrillville Community School Corporation
- Merrimac Industries Inc.
- Merrimack College
- Merrimack County
- Merrimack Pharmaceuticals Inc.
- Merritt Group
- Merritt School District
- Merry Maids
- Mersana Therapeutics
- Merton Community School District
- Meru Networks Inc.
- Meruelo Maddux Properties Inc.
- Merus
- Merus Labs International Inc
- Merus Labs International Inc. Co.
- Mesa Air Group Inc. (American Eagle and United Express Airlines)
- Mesa County
- Mesa County Valley School District No. 51
- Mesa Laboratories Inc.
- Mesa Royalty Trust
- Mesa State College
- Mesa Unified District
- Mesa Union Elementary School District
- Mesa View Regional Hospital
- Mesa Vista Consolidated Schools
- Mesabi East School District
- Mesabi Trust
- Mescalero Phs Indian Hospital
- Mesick Consolidated Schools
- Mesoblast
- Mesquite Independent School District
- Messer Construction
- Messiah College
- Met-Pro Corp.
- Meta
- Meta Financial Group Inc.