Although sports officials are crucial in the adjudication of rules during competition, research into officiating populations is preliminary. This review explores existing research on the effects of sleep loss on decision-making in sports officials, while considering athlete populations to gain relevant insight into sports officials and the growing decision-making demands of their role. Specifically, cognitive factors that influence decision-making were identified and the potential relationship between sleep/wake behaviors and decision-making in sports officials was examined. Particular focus was granted to sleep, specifically sleep restriction in athlete populations, and the hypothesized relationship between sleep/wake behaviours and decision-making in sports officials. Impaired sleep quantity and quality has been shown to impair cognitive performance. In the context of sport, impairments to sleep can negatively impact motivation, physical strength, reaction time and decision-making, all of which are imperative to the role of the sports official. Despite numerous studies demonstrating sleep loss reduces cognitive performance in athletes, this review revealed that similar research in sports officials is surprisingly yet to be conducted. Since sports officials require excellent cognitive and physical skills to make the correct decision, inquiry into the influence of sleep on cognitive performance may encourage research that facilitates improved performance training methods for decision-making in officials. Such findings are important to maintain the standard of officiating and allow for the development of guidelines and strategies to manage sleep and optimize decision-making across various sporting codes.