Loneliness is considered a public health problem that affects older people in particular. This project, funded by the Interreg UE Programme, aims to explore the relationships between isolation caused by the COVID-19 pandemic, loneliness and wellbeing of these populations, fundamental to the establishment of preventive measures and the design of interventions that facilitate the reduction of the adverse consequences of isolation/loneliness in older people, considering the role of family and social relationships.