The Congress on Numerical Methods in Engineering (CMN 2013) took place in Bilbao from June 25th to 28th and its main aim was to act as a forum to collect relevant scientific and technical developments in the numerical methods and computational mechanics fields. CMN 2013, was jointly organized by the Spanish (SEMNI) and Portuguese (APMTAC) associations for numerical methods and was a meeting point for researchers and technicians of both countries and the Latin American community.