Opar

Opar or OPAR may refer to:


 * Opar (fictional city), a fictional lost city in Edgar Rice Burroughs's series of Tarzan novels
 * Opar (state constituency), a state constituency of Malaysia
 * Opar, Albania
 * OPAR L'Orientale Open Archive, the institutional repository of the University of Naples, Italy
 * Objectivism: The Philosophy of Ayn Rand, a book by Leonard Peikoff
 * GTRI Office of Policy Analysis and Research, a think tank at the Georgia Tech Research Institute