UIS

UIS may refer to:


 * Uis, a village in Erongo Region, Namibia
 * Underwater Inspection System, a component of the Underwater Port Security System developed for the United States Coast Guard
 * Universal Interactive Studios (now Vivendi Games)
 * University of Illinois Springfield, a public four-year university in the United States
 * Universidad Industrial de Santander, Colombia
 * University of Stavanger, a public research university in Norway
 * Union Internationale de Spéléologie, an international umbrella organization for caving and speleology
 * Unisys Corporation NYSE stock symbol
 * UIs, plural abbreviation of user interface
 * Uisai language, ISO 639-3 code
 * Umpire Information System, made by QuesTec and used for providing feedback and evaluation of Major League umpires
 * UNESCO Institute for Statistics