Politics and Business magazines
- The Midland Company
- The Mills Corporation
- The Miner Group International
- The Minute Maid Company
- The Mitsubishi Bank, Ltd.
- The Mitsubishi Trust & Banking Corporation
- The Mitsui Bank, Ltd.
- The Mitsui Trust & Banking Company, Ltd.
- The Molson Companies Limited
- The Monarch Cement Company
- The Montana Power Company
- The Morgan Crucible Company plc
- The Morgan Group, Inc.
- The Motley Fool, Inc.
- The Mutual Benefit Life Insurance Company
- The Mutual Life Insurance Company of New York
- The National Bank of South Carolina
- The Nature Conservancy
- The Neiman Marcus Group, Inc.
- The New Piper Aircraft, Inc.