MWI
MWI is the country code for Malawi in several country code systems.
MWI may also refer to:
Science and technology
- Many-worlds interpretation, in quantum mechanics
- Message-waiting indicator, in telephony
- Mobile Web Initiative, in Mobile Web
- Maths Week Ireland, an all-island (Republic of Ireland and Northern Ireland) mathematics outreach initiative
Other uses
- Ministry of Water and Irrigation, in Water supply and sanitation in Jordan
- Warsaw Modlin Airport (IATA: WMI)
- Mountain Warfare Instructor, in Mountain Warfare Training Center