ECCOMAS (European Community on Computational Methods in Applied Sciences) is a scientific organization founded in 1992, grouping together European associations with interests in the development and applications of computational methods in applied sciences and technology. The main event organized by ECCOMAS is its biennial European Congress, providing a rendezvous for scientists and engineers from within Europe and around the globe. The 9th European Congress on Computational Methods in Applied Sciences and Engineering will be held from 3rd to 7th June, 2024, in Lisbon (Portugal).