Objective of the Study: This research aims to examine the impact of hosting sports events on Iranian society, seeking to establish a correlation between event hosting and sports participation across diverse demographic segments.Methodology: Employing a qualitative approach, this study conducted semi-structured interviews with 12 experts. The interview questions were meticulously designed to address the central research question comprehensively. Grounded theory analysis, involving open coding, axial coding, and selective coding, was applied to the collected data, ensuring a thorough exploration of emerging concepts and themes. Originality/Relevance: This research is distinctive in its approach by not delineating boundaries, instead aiming to comprehensively explore the effects of hosting sports events on all segments of the Iranian population. Despite recent political constraints limiting Iran's ability to host major international events, the study critically evaluates the significance of such occurrences and elucidates missed opportunities for societal advancement. The study's focus on diverse demographic segments and its exploration of causal, contextual, and intervening factors contribute to its originality and relevance.Main Results: The study unfolds a nuanced interplay of social, cultural, techno-managerial, legal, economical, and socio-cultural factors, shedding light on the multifaceted relationship between event hosting and sports participation. While recognizing the significance of regular physical activity in promoting overall health, the main results highlight the motivational impact of sports events on individuals' increased physical engagement.Theoretical/Methodological Contributions: The research makes theoretical contributions by developing a coherent framework grounded in the qualitative data, explaining the complex relationship between sports events and sports engagement.