摘要:This study is conducted with the aim of determining whether there is a difference between hand preference and success of adult Karate and Taekwondo athletes with regards to their gender. 255 athletes in total (144 male and 111 female) who participated in Turkey inter-university karate and taekwondo championships are included in the research. The “Oldfield Survey (1971)” that was developed to determine the hand preferences and some bio-motor characteristics of the athletes was implemented. In order to evaluate the success status, the correlation difference between the data obtained by following the results of the competition evaluation, hand preference and success was evaluated in the SPSS program. Dominant hand preference, athletic success and medal winning status of the athletes in both branches were compared. According to the findings, female karate and taekwondo athletes’ dominant hand preference and medal winning status have a weak and negative relation ( p . 05). There was no significant relation between dominant hand preference and the branches ( p > 0 . 05). There was also no significant relation between dominant hand preference, medal winning status and branches of male karate and taekwondo athletes ( p > 0 . 05). In conclusion, a weak relation was found out between dominant hand preference of left-handed female karate and taekwondo athletes in their favor with regards to winning medals. However, no relation was found regarding male athletes.