M. Phil. / Referees are important role-players in soccer matches. The physical fitness of referees may influence their optimal positioning throughout the game. Limited research has been conducted on soccer referees, with most of the previous research focusing on the primary referee. The research conducted has shown differences in demands and fitness levels of referees officiating in different leagues. To date no research has been conducted on African referees. The primary aim of this study was to investigate and compare the physiological profiles of South African soccer referees. The secondary aim of the study was to investigate and compare match demands placed on South African soccer referees.