This book constitutes the refereed proceedings of the Third International Conference on Artificial Intelligence and Symbolic Mathematical Computation, AISMC-3, held in Steyr, Austria, in September 1996. The 19 revised full papers presented in the book were carefully selected by the program committee; also included are four invited survey and state-of-the-art contributions by Scott, Dillmann and Friedrich, Cohn, and Wang. Among the topics addressed are theorem proving, rewriting systems, symbolic computation, spatial reasoning, computational geometry, and automated deduction.