COPR or Copr may refer to: Copper Range Railroad, a former U.S. Class I railroad, by reporting mark Copr. (copyright), a legal right Copr, a build system for creating Fedora software packages Critique of Pure Reason, philosophical treatise written by Immanuel Kant See also Copyright notice, formerly requiring "Copr." Copyright symbol, the symbol used in copyright notices (used instead of "Copr.") Copper (disambiguation) Copper, a metallic chemical element