This volume contains the papers presented at the EleventhInternational Conference on Automated Deduction (CADE-11)held in Saratoga Springs, NY, inJune 1992. A total of 136papers were submitted for presentation by researchers fromnearly 20 countries. Papers covered many topics including:resolution; term rewriting; natural deduction; theoremproving, in particular in algebra and geometry; paralleltheoremprovers; unification theory; constraint solving;logic programing; verification; multivalued, temporal andnonclassical logics; non-monotonic reasoning; planning;proof theory; higher-order logics; and inductive theoremproving. Each submission was reviewed by at least threeprogram committee members and 46 papers were selected forpresentation and publication. This volume also containsshort descriptions of 23 implementations of automateddeduction systems. The volume opens with a keynote addressby Larry Wos, winner of the first Herbrand Award forDistinguished Contributions to Automated Reasoning.