RSI
RSI is an abbreviation for:
- Radio Slovakia International , the international service of the Slovak Radio
- Radiotelevisione Svizzera , Italian-speaking public broadcaster in Switzerland
- Rapid Sequence Induction , a rapid induction of anesthesia
- Relative Strength Index , an indicator in technical analysis
- Repetitive Strain Injury Syndrome , known as "mouse arm", is a disease
- Repubblica Sociale Italiana , a fascist state in Northern Italy 1943–1945, see Italian Social Republic
- Resource Software International Ltd. , a Canadian software company, see RSI-Group
- Richard Strauss Institute in Garmisch-Partenkirchen
- Rote Sportinternationale , an international communist sports umbrella organization that existed from 1921–37
- Singen (Hohentwiel) station according to DS 100
- Ford Escort RSi , short for the Ford Escort RS1600i
