USR may refer to:USRobotics, a technology firm USR, in Sainte-Rose, Guadeloupe U.S. Robots and Mechanical Men, a fictional robot manufacturer /usr, directory in Unix systems, see Filesystem Hierarchy Standard A variant of the Steyr AUG, assault rifle Save Romania Union, a Romanian political party Union of Serbs of Romania, a Romanian political party USR (BASIC), a common BASIC instruction to execute native machine code Upward Sun River site, archaeological site in Alaska Uxbridge and South Ruislip, a parliamentary constituency in the United Kingdom Unión Santafesina de Rugby, body that rules the game of rugby union in Santa Fe, Argentina