For over two decades, kinesio tape has been used to improve athletic performance and as a therapeutic method. However, its effect on muscle strength remains debatable since the research was not conclusive in this area. Therefore, the purpose of this study was to evaluate the immediate effect of kinesio tape on the Gastrocnemius muscle strength during standing long jump performance (SLJ). Thirty recreationally active healthy young adults, all males (n=30) age 22.3 ± 1.3 years, height 172.6 ± 5.6 cm, weight 63.8 ± 12.6 kg, were recruited from Umm Al-Qura University students to participate in this experiment. During two visits, each participant performed 6 standing long jumps (SLJ), three while taped. A paired sample t-test was conducted to evaluate the differences. A significant difference was found between the pre and post-taping means with 80% of the participants improving their performance while taped. This result supports the claim that kinesio taping can improve muscle strength when applied from the muscle origin to its insertion. In addition, the results highlight the immediate impact of kinesio tape on muscle function and performance.