Since 2007, the Center of Excellence for High Performance Materials, University of Tehran, has successfully arranged a series of biennial conferences focused on UltraFine Grained and Nano-Structured Materials (UFGNSM). The purpose of these meetings is to allow those interested in the field to get together to present their research in a setting that fosters discussion, collaboration, and advancement in the field. The University of Tehran launches a call for participation for the 7th UFGNSM event (UFGNSM2019) that they are co-organising with the University of Trento (Italy), the conference host, on 1-3 September 2019. More details at: https://event.unitn.it/ufgnsm2019/