| MS/MS | Material Science and Manufacturing in Space 
| Others |
| MSMS | Madras School of Management Science
| Others |
| MSMS | Main Street Middle School
| Others |
| MSMS | Maize South Middle School
| Others |
| MSMS | Making Science Make Sense
| Others |
| MSMS | Malaysian Society of Marine Sciences
| Others |
| MSMS | Manhattan South Middle School
| Others |
| MSMS | Manitou Springs Middle School
| Others |
| MSMS | Marine Safety Management System
| Others |
| MSMS | Master of Science in Management Studies
| Others |
| MSMS | Master of Science in Marine Science
| Others |
| MSMS | Master of Science in Medical Sciences
| Others |
| MSMS | Masters of Science in Medical Sciences
| Others |
| MSMS | Maximal Speed Molecular Surface
| Others |
| MSMS | Mean Scenario Motivation Score
| Others |
| MSMS | Michigan State Medical Society
| Others |
| MSMS | Microsoft Systems Management Server
| Others |
| MSMS | Mississippi School for Mathematics and Science
| Others |
| MSMS | Mississippi School of Math and Science
| Others |
| MSMS | Mountain Shadows Middle School
| Others |
| MSMS | Muscle Shoals Middle School
| Others |