RMI may refer to:
In computing:
- RMI Corporation, a semiconductor company manufacturing CPUs
- Remote Method Invocation, an application-programming interface used in Java environments
- RIFF MIDI file, used in Microsoft Windows
Other:
- Federico Fellini International Airport, serving Rimini in Italy (IATA code)
- Radio-magnetic indicator, an instrument used in aircraft navigation
- Radio Massacre International, a British electronic-music group
- Ramapo Mountain Indians, a Native American group
- Rank mobility index, a measure of change in population-rank
- Repetitive motion injury, usually RSI
- Republic of the Marshall Islands, a nation-state in Micronesia
- Revenu minimum d'insertion, a form of welfare introduced in France in 1988
- Rocky Mountain Institute, a non-profit energy-conservation organization in the United States of America
- Rocky Mount Instruments, manufacturer of the RMI 368 Electra-Piano and Harpsichord
- Royal Manchester Institution (1823-1882), a learned society promoting the arts in Manchester, England