Abstract Loneliness is a global issue impacting a third of all adults, with young adults (15-25 years) disproportionately affected. Prolonged loneliness has serious consequences for mental and physical health and should be addressed as a matter of urgency. The built environment, where we live, work, and socialise, is increasingly recognised as a significant factor influencing loneliness. However, existing interventions often focus on older adults and neglect the role of the built environments in promoting connectedness across the life course. To bridge this gap, we need interdisciplinary collaboration to understand how our environments and communities can mitigate loneliness. This workshop will explore the critical intersection of place and loneliness interventions. The three panellists bring unique interdisciplinary expertise on loneliness ranging from policy to intervention implementation. These three talks (10min each) will set the stage for a dynamic discussion (30min): 1. Nina Goldman, commissioned by the World Health Organization to undertake a global overview of national loneliness policies, will present findings on how national strategies integrate place-based strategies across sectors such as housing, transportation, and urban planning. 2. Mathias Lasgaard, leading researcher on loneliness interventions, will present the innovative ‘More Together’ (MoTo) project - a multifaceted intervention addressing loneliness in both young and older adults within the Silkeborg Municipality, Denmark. This presentation will contextualize MoTo within the broader landscape of targeted loneliness interventions. 3. Eric Schoenmakers, advisor of the national loneliness action program in the Netherlands, will introduce the “I BELONG” project, an international network dedicated to understanding the relationship between public spaces, loneliness, and effective interventions for young adults in the Netherlands. Key messages • We aim to stimulate a paradigm shift in the way we address loneliness by moving beyond individual-centred solutions to develop a more holistic and community-based approach. • We need more interdisciplinary collaboration to understand how our environments and communities can mitigate loneliness. Speakers/Panelists Nina Goldman University of Manchester, Manchester, UK Mathias Lasgaard Defactum, Central Denmark Region, Aarhus, Denmark Eric Schoenmakers Fontys University of Applied Sciences, Eindhoven, Netherlands