| Abbreviation | Definition |
|---|---|
| MSSI | Multiple Sclerosis Society of India |
| MSSP | Missionary Society of Saint Paul |
| MSSP | Missionary Society of St Paul |
| MSSS | Malankara Social Service Society |
| MSSS | Persatuan Sains Tanah Malaysia |
| MSSV | Multiple Sclerosis Society of Victoria |
| MST | *!2!!2#'4"2A+H#0@(D" |
| MST | ??????????????????????????? |
| MST | Metrology Society of Thailand |
| MSTF | Multi Society Task Force |
| MSU | Mushroom Society of Utah |
| MSUS | Marine Science Undergraduate Society |
| MSUS | Michael Servetus Unitarian Society |
| MSVA | Medical Society of Virginia Alliance |
| MSVF | Medical Society of Virginia Foundation |
| MTA | Hungarian Academy of Sciences |
| MTA | Magyar Tudományos Akadémia |
| MTA | Magyar Tudomnyos Akadmia |
| MTCS | Meeting Town Community Society |
| MTDS | Malaysian Turkish Dialogue Society |