RSI

RSI may refer to:

Broadcasting services

 * Radio Singapore International, a former radio broadcaster in Singapore
 * Radio Slovenia International, the international service of Slovenian state radio
 * Radiotelevisione svizzera di lingua italiana, a Swiss radio and television broadcaster

Computing

 * RSI register, a 64-bit processor register of x86 CPUs
 * Reference Software International, a defunct productivity software developer
 * Relational Semantics, Inc., an American software company

Finance

 * Relative strength index, a technical indicator used in the analysis of financial markets
 * Revenue and Social Insurance number, an identifier used for tax and welfare purposes in Ireland

Medicine and psychology

 * Rapid sequence induction, a method of emergency intubation, involving paralytics and sedation
 * Repetitive strain injury, a disorder affecting muscles, tendons and nerves from repetitive movements, forceful exertions, vibrations, mechanical compression, or sustained/awkward positions
 * Residual self image, the concept that individuals tend to think of themselves as projecting a certain physical appearance
 * The Real, The Symbolic, and The Imaginary, a theory in Lacanian psychoanalysis concerning human perception of reality

Physics

 * RSI-value, a measure of how well a two-dimensional barrier resists the conductive flow of heat
 * Review of Scientific Instruments, a scientific journal

Other organisations

 * RSI Corporation, an American safety compliance consulting firm
 * RADARSAT International, a provider of data and information derived from the Canadian RADARSAT satellite program overseen
 * Red Sports International, an international sports organization supported by the Communist International
 * Research Science Institute, an international summer research program for high school students
 * Religious Science International, a religious organization

Other uses

 * Ṛṣi, a term for an accomplished and enlightened person in Hinduism and Buddhism
 * Red Sea International Airport in Saudi Arabia
 * Regional Snowfall Index, a system used to assess the impact of winter storms in the United States
 * Italian Social Republic or Repubblica Sociale Italiana, a puppet state of Nazi Germany during the later part of World War II