Politics and Business magazines
- Mayfield Dairy Farms, Inc.
- Mayflower Group Inc.
- Mayor’s Jewelers, Inc.
- Mazel Stores, Inc.
- Mazzio's Corporation
- MBC Holding Company
- MBIA Inc.
- Mc Wane Corporation
- MCA Inc.
- McAlister's Corporation
- McBride plc
- McCain Foods Limited
- McCarthy Building Companies, Inc.
- Mccaw Cellular Communications, Inc.
- McClain Industries, Inc.
- McClatchy Newspapers, Inc.
- McCormick & Schmick's Seafood Restaurants, Inc.
- McCoy Corporation
- McDATA Corporation
- McGraw-Hill, Inc.