| Acronym | Definition | 
|---|
| MSIS➣Medicaid Statistical Information System (formerly MedStat) | 
| MSIS➣Multiple Sclerosis Impact Scale | 
| MSIS➣Meldingssystem for Smittsomme Sykdommer (Norwegian: Communicable Diseases Registry) | 
| MSIS➣Marine Safety Information System | 
| MSIS➣Man-Systems Integration Standards | 
| MSIS➣Mass Spectrometer and Incoherent Scatter | 
| MSIS➣Master of Science Information Systems | 
| MSIS➣Model State Information System (EPA) | 
| MSIS➣Modeling and Simulation Information System | 
| MSIS➣Malawi Social Indicator Survey | 
| MSIS➣Master of Spatial Information Science |