The 2nd International Symposium on Notch Mechanics is organised by the Spanish Network on Notch Mechanics (Red REME), which has been granted by the Spanish Ministry of Science and Innovation (grant RED2018-102556-T (AEI)). It will be held at the Civil Engineering School of the Polytechnic University of Madrid, Spain, 2-3 September 2021. The first edition was hosted by the University of Cantabria, Santander in March 2017