IUS

Ius or IUS may refer to:

Education

 * Indiana University Southeast, an American campus
 * International Union of Students, a global association of student unions
 * International University of Sarajevo, Bosnia and Herzegovina
 * Inter-University Seminar on Armed Forces and Society, for military sociology research

Law and government

 * Ius, a right afforded to ancient Romans
 * Ius (canon law), a Roman Catholic custom
 * Innovation Union Scoreboard, an EU comparator of innovation by member states

Science and technology

 * Inertial Upper Stage, a two-stage booster rocket
 * Interactive Unix, an operating system port
 * Intrauterine system, a contraceptive device