This special issue examines critical ethical, legal, and policy debates surrounding brain trauma in sport, focusing on challenges in concussion management practices and protocols. Brain injury concerns extend beyond traditional contact sports like boxing, encompassing sporting activities involving rapid acceleration, deceleration, and surface impacts, such as cycling and equestrian sports. Among such problems are the identification and management of brain injuries, the roles of officials and healthcare professionals, and the broader implications for sport integrity and athlete careers. The special issue (...) is organized into four sections: ethics of concussion medicine, socio-legal aspects, sport ethical dimensions, and public health policies. Contributions discuss concussion management in youth sport, sport federations’ and athletes’ duties involvement in concussion-related research, strategies to support and enhance athlete autonomy, public health-informed brain injury frameworks, conflict of interest in concussion management protocols, litigation and liability in concussion research and collaboration, race and genomics in brain-injury scientific discourses, rule changes in sport to reduce head impact, the contextual nature of brain injury and athlete decision-making, the ethical use of genetic testing in brain-injury related research, marketing strategies to advertise tackle football to children and adolescents, and policy purposes and evidence underpinning concussion management practices. This comprehensive exploration offers diverse disciplinary insights, making it a crucial resource for sport humanities scholars, policymakers, and medical professionals. Keywords: brain injury, sport ethics, concussion, sport law, sport policy. (shrink)