MPI
MPI may stand for:
- Mental Performance Index, first ever mental scoring system in sport by Dr. John F. Murray
- Message Passing Interface, a computer communications protocol
- Message Parsing Interpreter, a lisp-like language on Fuzzball MUCKs
- Motive Power Industries, a locomotive manufacturer
- Max-Planck-Institut, elite scientific research institutes in Germany
- Multi Point Interface, a automation programming protocol from Siemens
