Contains fulltext : 245005.pdf (Publisher’s version ) (Open Access)Social exclusion is a complex concept that is relevant in terms of the health of vulnerable groups. Attempts have been made in the past to measure it, both at the population and the individual level. The aim of this research was to engage with a broad range of relevant stakeholders in Ireland in order to learn how they defined and conceptualised social exclusion. Semi-structured interviews were carried out with 24 participants selected using maximum variation sampling. One quarter of the interviewees were experts by experience. Participants included academic experts, the heads of organisations working nationally with socially excluded groups, politicians, c...