| Acronym | Definition |
|---|
| MMIS | Medicaid Management Information System (various US states) |
| MMIS | Municipal Management Information System |
| MMIS | Malignant Melanoma In Situ (cancer) |
| MMIS | Materials Manager Information System |
| MMIS | Maria Montessori International School (Philippines) |
| MMIS | Maintenance Management Information System (Rail Industry) |
| MMIS | massively multiparticipant Internet sport |
| MMIS | Microsoft Mobile Information Server |
| MMIS | Making Medical Injections Safer (John Snow, Inc.) |
| MMIS | Master of Management Information Systems |
| MMIS | Material Management Information System |
| MMIS | Montreal Musical Instrument Show (Montreal, Canada) |
| MMIS | Modification Management Information System |
| MMIS | Military-Man-In-Space |
| MMIS | Manpower Management Information System |
| MMIS | Man Machine Interface Subsystem |
| MMIS | Member of the Marketing Institute of Singapore |
| MMIS | Massachusetts Metrology and Instrument Service (Rockland, MA) |
| MMIS | Matrixx-MDB Integration Software (International Space Station flight configurations information repository) |
| MMIS | Master's in Management Information Systems |