Other
- Manitoba Public Insurance, a non-profit Crown corporation based in Manitoba
- The FAA location identifier for Mariposa-Yosemite Airport
- Meeting Professionals International, a professional community for the global meetings industry
- Ministry for Primary Industries (New Zealand), a government agency in New Zealand
- Motive Power, Inc., locomotive manufacturer based In Boise Idaho.
- Movimiento Pro-Independencia, the Puerto Rican Pro-independence Movement
- Multidimensional Poverty Index, used by the UNDP
- Middle Powers Initiative, a program of the Global Security Institute
- Milanka Price Index, one of the principal stock indices of the Colombo Stock Exchange in Sri Lanka
- Mission Pictures International, a foreign sales, finance, and distribution company
- MPI Home Video, a home entertainment company
Read more about this topic: MPI