This volume is a compilation of papers that were presented at the Symposium 4A: 'Advanced Structural Materials' of the XXIII International Materials Research Congress, organized in collaboration with MRS, which was held from August 17-21, 2014 in Cancun, Quintana Roo, Mexico. The symposium was devoted to fundamental and technological applications of structural materials, and continued the tradition of providing a forum for scientists from various backgrounds with a common interest in the development and use of structural materials to come together and share their findings and expertise. The...