This book constitutes the refereed proceedings of the 17th International Conference on Automated Deduction, CADE-17, held in Pittsburgh, Pennsylvania, USA, in June 2000.The 24 revised full research papers and 15 system descriptions presented were carefully reviewed and selected from 53 paper submissions and 20 system description submissions. Also included are contributions corresponding to invited talks and tutorials. The accepted papers cover a variety of topics related to theorem proving and its applications such as proof-carrying code, cryptographic protocol verification, model checking, cooperating decision procedures, program verification, and resolution.