MIS
- Anti-Müllerian hormone
- ISO 639-2
- ISO 639-3
- MIS capacitor
- Madison International Speedway
- Manado Independent School
- Management information system
- Marine isotope stage
- Maritime Internet Services Inc.
- Mass-inflation singularity
- Master of International Studies
- Maximal independent set
- Melaka International School
- Mexican Institute of Sound
- Michigan International Speedway
- Military Intelligence Service (United States)
- Minimally invasive surgery
- Misima Island Airport
- Movement for the Independence of Sicily
- Multi Interface Shoe
- Multisystem inflammatory syndrome
- Munich International School
- Myanmar International School
- Teddy Bear (1980 film)
- The Mother's International School, New Delhi