RIS may refer to:

• Radio Information Service, a reading service for the blind in Pennsylvania, US
• Radiological information system, for the electronic management of information related to medical imaging
• Radiologically isolated syndrome, suggesting multiple sclerosis
• Rail Integration System, for attaching accessories on firearms
• Microsoft Remote Installation Services, booting computers via PXE
• Reparto Informazioni e Sicurezza, a military intelligence agency of Italy, see SIOS
• Republik Indonesia Serikat (Republic of the United States of Indonesia)
• RIS Info, later RDS Info, Canadian sports broadcaster
• Reverse Image Search
• Reviving the Islamic Spirit, an Islamic conference in Canada
• Riverside Indian School
• RIS (file format), for citation programs
• RIS Delitti Imperfetti, an Italian TV series
• R. I. S. – Die Sprache der Toten, a German TV series
• R.I.S, police scientifique, a French TV series
• Rishiri Airport, Japan, IATA airport code
• Rishton railway station, England, station code
• Ruamrudee International School, Thailand
• Russian imperial stout, a strong dark beer

• ris (disambiguation)
• R1S, an SUV by Rivian
• RI (disambiguation)

This disambiguation page lists articles associated with the title RIS.
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