Basketball is the second most popular sport in the world, with more than 450 million players regularly playing competitively or for fun. Agility is a very important performance parameter for success in this sport, and it can be increased by various methods. Kinesiology taping, which is one of these methods, has gained popularity especially since the 2008 Beijing Olympics and has effects such as increasing muscle function, increasing lymphatic fluid and blood circulation, reducing pain by affecting the neurological system and restoring joint structure by providing mechanical support to the related joint. In the literature, the number of studies examining the effects of kinesiology taping on the agility parameter of the muscles around the knees of basketball players is limited. The aim of this study is to examine the effect of kinesiology taping applied to the muscles responsible for joint mobility around the knee joint on the agility parameter of basketball players. Six amateur basketball players over the age of 18 with a mean age of 24.33 were included in our study. It was paid attention that the participants did not have lesions in the application area or lower extremity musculoskeletal problems that would adversely affect performance. Kinesiology taping was applied to Hamstring and Quadriceps group muscles. Participants were evaluated twice, before and after taping, with the Agility T Test and the Pro-Agility Test. Test results were recorded in seconds with a stopwatch. Hamstring taping was applied to the medial and lateral Hamstring groups with 30% tension, and Quadriceps taping was applied with Ytype taping at 15-35% tension to the related area. The second assessment was performed 30 minutes after taping to ensure optimal sensory adaptation. As a result of the data analysis, a statistically significant decrease was observed when the preand post-application data of all participants in the Pro-Agility Test (p=0.024) and Agility TTest (p=0.027) were compared. While the Agility T Test average value of all participants was 5.14, it increased to 5.07 after the application; While the average value of the Pro-Agility Test was 5.21, it decreased to 5.17 after the application. As a result, it has been seen that kinesiology taping applied to the muscles around the knee may have a positive effect on the agility parameter of basketball players. In order to generalize these results, it is planned to publish the results by including a higher number of participants in the study.