This book constitutes the refereed proceedings of the Joint 25th International Conference on
Rewriting Techniques and Applications RTA 2014 and 12th International Conference on Typed
Lambda-Calculi and Applications TLCA 2014 held as part of the Vienna Summer of Logic VSL
2014 in Vienna Austria in July 2014. The 28 revised full papers and 3 short papers presented
were carefully reviewed and selected from 87 submissions. The papers provide research results
on all aspects of rewriting and typed lambda calculi ranging from theoretical and
methodological issues to applications in various contexts. They address a wide variety of
topics such as algorithmic aspects implementation logic types semantics and programming.
