RSI

RSI may refer to:

Business

• RADARSAT International, a subsidiary of MacDonald Dettwiler and Associates
• Red Sector Incorporated, a demo and "warez" group
• Resource Software International Ltd., a communication management call accounting software company
• Resin Systems Inc.
• Regional Systems Integrator, a smaller partner of a larger company that implements solutions at local levels
• Relative Strength Index, a financial market indicator
• RSI-Group, a software company making process simulators

Science and technology

• Records Series Identifiers, a method used in Records Management for applying retention and followup information for electronic documents
• Rapid sequence induction, a form of anesthesia
• Review of Scientific Instruments, a scientific journal
• Repetitive strain injury, a disorder affecting muscles, tendons and nerves from repetitive movements
• R-value Système International, a measure of thermal resistance in SI units, see R-value (insulation)
• Register Storage Immediate, a register available in some assembly languages
• Right Scale of Integration or Reasonable Scale of Integration as opposed to Large-Scale Integration
• Research Science Institute, a summer research program held at MIT for rising high-school seniors
• Recommended Site Improvement, a feature requested to website developers to improve overall user experience
• Route Set Information, a predefined routing element in computer networking

Government and society

• Radio Slovenia International, international service of Slovenian state radio on shortwave and via satellite
• Radio Singapore International, a news agency in Singapore
• Radiotelevisione svizzera di lingua italiana, a Swiss radio and television broadcaster
• Revenue and Social Insurance number, in the Republic of Ireland
• Italian Social Republic, Repubblica Sociale Italiana
• Robotics Society of India
• Russian Space Institute (researched whole body vibrations)
• Required supplementary information, evaluations of governmental accounting

Arts and culture

• Religious Science International, a group of Religious Science churches
• Residual self image, the self-projected image of oneself in psychology and in the movie The Matrix
• Rishi (IAST: ṛṣi), a Hindu saint or sage