This volume contains the proceedings of LPAR '92, theinternational conference on logic programming and automatedreasoning held in St. Petersburg in July 1992. The aim ofthe conference was to bring together researchers from theRussian and the international logic programming and theoremproving communities. The topics of interest covered by papers inthe volumeinclude automated theorem proving, non-monotonic reasoning,applications of mathematical logic to computer science,deductive databases, implementation of declarative concepts,and programming in non-classical logics. LPAR '92 is the successor of the First and Second RussianConferences on Logic Programming held in 1990 and 1991,respectively, the proceedings of which were publishedinLNAI Vol. 592.