Politics and Business magazines
- Mecklermedia Corporation
- Medco Containment Services Inc.
- Media Arts Group, Inc.
- Mediacom Communications Corporation
- MediaNews Group, Inc.
- Mediaset SpA
- Medical Information Technology Inc.
- Medical Management International, Inc.
- Medical Staffing Network Holdings, Inc.
- Medicis Pharmaceutical Corporation
- MedImmune, Inc.
- Mediolanum S.p.A.
- Medis Technologies Ltd.
- Meditrust
- Medline Industries, Inc.
- Medusa Corporation
- Mega Bloks, Inc.
- Megafoods Stores Inc.
- Meggitt PLC
- Meier & Frank Co.