The most important success factors in sports include body build, conditioning, technical and tactical skills, mental abilities and the experience of a competitor [1]. Since WTF (World Taekwondo Federation) taekwondo was approved for the Sydney 2000 Olympic Games, it has been the subject of extensive research, where one of the areas of interest is the identification of success factors. Training effectiveness in sport is measured with the best possible performance (result) in the most important competitions. Therefore, many researchers have been interested in establishing success factors in taekwondo. The majority of studies have sought to determine correlations between different indicators and performance in taekwondo, including morphological [2-10], biomechanical [7; 11], conditioning, physiological and psychological indicators [6;8; 12-14] and indicators related to coordination [15]. The aforementioned researchers have found that taekwondo competitors with mesomorphic body build, high levels of speed, strength, endurance and flexibility, as well as shorter reaction times and proper technique have achieved excellent results. Rarely have several success factors in elite taekwondo competitors been analysed simultaneously (in terms of me dals they have or have not won at the highest levels of competition). In the above-mentioned studies, researchers focus ed entirely on single factors that were somatic or physiological. The aim of this study was to identify selected success factors of elite Olympic taekwondo competitors within the context of medals that they have or have not won during Polish Junior Championships (PJCs).