As the 15th edition of this prestigious symposium, LASNPA 2026 continues a rich tradition of scientific exchange that started in Venezuela in 1995. The symposium has traveled across Latin America, with its 14th edition held in Mexico in 2024, strengthening scientific bonds and promoting regional development in nuclear science. This marks the symposium's return to Brazil, which first had the pleasure of hosting in 2003. LASNPA 2026 aims to foster collaboration and showcase the latest advancements in the field.