| All Vendors |
| MacForensicsLab, Inc. | Fremont, CA |
| Magle Life Sciences | Lund, Sweden |
| MagnaPlan Corporation | Champlain, NY |
| Magnet Forensics | Waterloo, Canada |
| MAM-A, Inc. | Colorado Springs, CO |
| McCrone Associates, Inc. | Westmont, IL |
| McCrone Atlas of Microscopic Particles | Westmont, IL |
| McCrone Microscopes & Accessories | Westmont, IL |
| McGraw-Hill | New York, NY |
| MD5Group | Dallas, TX |
| Media Cybernetics | Rockville, MD |
| Media Distributors | Elmhurst, IL |
| Media GenetiX, LLC | Golden, CO |
| Medical University of Gdansk | Gdansk, Poland |
| Medtech Forensics, Inc. | Tallahassee, FL |
| Metro Corporation | Wilkes-Barre, PA |
| METTLER TOLEDO | Columbus, OH |
| Micro Systemation AB | Solna, Sweden |
| MicroLiter Analytical Supplies, Inc. | Suwanee, GA |
| Microscope.com | Roanoke, VA |
| Microzone Corporation | Ottawa, Canada |
| Mideo Systems, Inc. | Huntington Beach, CA |
| Miele | Princeton, NJ |
| Milestone | Kalamazoo, MI |
| Minus80 Monitoring | Charlottesville, VA |
| MinXray, Inc. | Northbrook, IL |
| Mitotyping Technologies, a division of AIBioTech | State College, PA |
| MK Digital Direct, Inc. | San Diego, CA |
| MO BIO Laboratories | San Diego, CA |
| Mobile Concepts by Scotty | Mount Pleasant, PA |
| Molecular Machines & Industries | Glattbrugg, Switzerland |
| Mopec, Inc. | Oak Park, MI |
| MorphoTrak | Alexandria, VA |
| Mystaire Misonix | Creedmoor, NC |