| MSTA | Maine Science Teachers Association 
| Others |
| MSTA | Manufacturers Surgical Trade Association
| Others |
| MSTA | Marsha Stern Talmudical Academy (Yeshiva University High School for Boys)
| Others |
| MSTA | Maruti Suzuki Training Academy
| Others |
| MSTA | Maryland State Teachers Association
| Others |
| MSTA | Math Science Technology Academy
| Others |
| MSTA | McLean Swimming and Tennis Association
| Others |
| MSTA | Member of the Society of Technical Analysts
| Others |
| MSTA | Michigan Science Teachers Association
| Others |
| MSTA | Michigan Septic Tank Association
| Others |
| MSTA | Microsoft Military Spouse Technology Academy
| Others |
| MSTA | Microsoft Teacher Academies
| Others |
| MSTA | Mid South Trails Association
| Others |
| MSTA | Military Spouse Technology Academy
| Others |
| MSTA | Mill School and Technology Academy
| Others |
| MSTA | Mink Security Training & Advice
| Others |
| MSTA | Missisippi Science Teachers Association
| Others |
| MSTA | Mississippi Science Teachers Association
| Others |
| MSTA | Missouri State Teacher Association
| Others |
| MSTA | Missouri State Teachers Association
| Others |
| MSTA | Montana Science Teachers Association
| Others |
| MSTA | Montata State TrapShooting Association
| Others |
| MSTA | Moore Stephens Technology Australia
| Others |
| MSTA | Moorish Science Temple of America
| Others |
| MSTA | Motorcycle Sport Touring Association
| Others |
| MSTA | Multi Stage Type Approval
| Others |
| MSTA | Multiple Semester Term Appointment
| Others |
| MSTA | Municipal School Transportation Assistance
| Others |
| MSTA | Must See To Appreciate
| Others |
| MSTA | Mutation Selection Threshold Algorithm
| Others |