| Acronym | Definition |
|---|
| MSMA | monosodium methanearsonate (pesticide) |
| MSMA | Missouri State Medical Association (Jefferson City, MO, USA) |
| MSMA | Mail Systems Management Association (New York, NY) |
| MSMA | Mississippi State Medical Association |
| MSMA | Maine School Management Association |
| MSMA | Member of the Sports Massage Association |
| MSMA | Manual Saliran Mesra Alam (Manual for Malaysia) |
| MSMA | Magnetic Shape Memory Alloy |
| MSMA | Motorcycle Sports Manufacturers Association |
| MSMA | Master of Science in Marketing Analytics |
| MSMA | Muscle Shoals Music Association (Muscle Shoals, AL, USA) |
| MSMA | Main Street Merchants Association |
| MSMA | Music Study, Mobility and Accountability |
| MSMA | Michigan Society of Medical Assistants |
| MSMA | Membrane Structures Manufacturers Association (Canada) |
| MSMA | Message Store and Message Access |
| MSMA | Mount Soledad Memorial Association (California) |
| MSMA | Makarov State Marine Academy (St. Petersburg, Russia) |
| MSMA | Magazine Street Merchants Association (New Orleans, LA) |
| MSMA | Minnesota Street Machine Association |
| MSMA | Maryland Society of Medical Assistants |
| MSMA | Moist-Soil Management Advisor (software) |
| MSMA | Master of Science in Marketing Analysis |
| MSMA | Mary Seacole Memorial Association (UK) |
| MSMA | Minnesota State Medical Association |
| MSMA | Metal Stud Manufacturers Association |
| MSMA | Multi-Slice Multi-Angle (medical imaging) |
| MSMA | Margarine and Shortening Manufacturers' Association |
| MSMA | Maryland Society of Medical Acupuncture (also seen as MSMA) |
| MSMA | Mid States Meat Association |
| MSMA | Methane Sodium Methyl Arsonate |
| MSMA | Male Sub-Miniature A (connector) |
| MSMA | Minnesota Society of Municipal Analysts |
| MSMA | Murray Spalding Movement Arts |
| MSMA | Michigan State Medical Association |
| MSMA | Massachusetts Society of Medical Assistants, Inc. |
| MSMA | Measurement System Methods Analysis |
| MSMA | minimum significant measurable activity |
| MSMA | Murrell-Shaw-Musher-Amos Exchange Perturbation Theory |