. Mean Point of Impact
. Message Passing Interface
. Migration Policy Institute (Washington, DC)
. Master Patient Index (health care)
. Ministry of Planning and Investment (Vietnam)
. Manitoba Public Insurance Corporation
. Meeting Professionals International
. Max-Planck-Institut (Institutes of the Max-Planck-Gesellschaft; Germany)
. Ministero della Pubblica Istruzione (Italy)
. Magnetic Particle (Powder) Inspection
. Meeting Planners International
. Mineral Policy Institute
. Moldflow Plastics Insight (injection molded components)
. Multi-Point Injection
