In common with many other societies with ageing populations, loneliness and social isolation have become a significant problem in contemporary Japan. The financial burden associated with an ageing... Show moreIn common with many other societies with ageing populations, loneliness and social isolation have become a significant problem in contemporary Japan. The financial burden associated with an ageing population, together with ongoing fiscal austerity, has severely constrained the ability of local authorities to address the problem. As a result, policymakers have sought cost‐effective methods of tackling the problem, including local co‐production with community groups. In this article, we consider the impact of loneliness and social isolation on wellbeing and then examine two illustrative case studies of local co‐production programs aimed at tackling social isolation amongst older adults in Japan. Show less