Dear Colleagues, On behalf of the scientific and executive committees, it is our great pleasure to cordially invite you to attend the 3rd Nanomedicine and Nanosafety Conference (NMNS 2020) which will be held at Tehran, Iran on January 25 and-26 of 2020. NMNS 2020 is jointly organized by Tehran University of Medical Sciences (TUMS), Iranian Society of Nanomedicine (ISNM), and Iran Nanosafety Network (INSN) The conference is supported by Iran Nanotechnology Innovation Council (INIC) and Iran Nanohealth Committee of Food & Drug Administration and aims to cover all medical and safety aspects of nanomaterials in human, animals and environment. The scientific program will consist of keynote/distinguished lectures, symposia, workshops, discussion panels and poster sessions. It is a good opportunity to meet scientists and researchers from all over the world to exchange ideas and to launch collaborations. The organizing committee is also planning a variety of unique social events to provide a chance for our attendees to enjoy the Iranian culture and history in a warm spirit of hospitality and friendship. We look forward to welcoming you and your active participation in the NMNS 2020 in Tehran, I.R. Iran. Sincerely yours,