Hospital Sant Joan de Déu Barcelona is a non-profit hospital specialised in maternal and child health, paediatrics, and the treatment of highly complex conditions, based in Esplugues de Llobregat, Barcelona. It combines healthcare, research, innovation, and teaching, and is a leading centre in areas such as paediatric oncology, rare diseases, and advanced therapies, with a model focused on comprehensive care for children, adolescents, and women.