The aim of this study is to investigate the relationship between the 3 different stretching exercises and the vertical jump in the adolescent basketball and volleyball players. In the study, 48 male basketball and volleyball players with a mean age of 15.5 ± 1.2 years, a mean body mass index of 20.92 ± 2.71 kg / cm2 and a mean age of 4 ± 2.3 years from Erzincan Youth Services and Sports Club participated voluntarily. The groups were performed homogeneously by considering the level of flexibility. The control group was also established to test the level of development. Before the study, flexibility and vertical jump pre-test measurements were performed. In addition to the training days, 3 days a week and for 6 weeks specific flexibility studies were applied to the groups. At the end of 6 weeks, flexibility and vertical jump post-tests were performed to the groups. The data obtained from the study were analyzed by using the SPSS 22.0 program. Since parametric test assumptions were fulfilled (kolmogorov - smirnov), the variance analysis, the chi-square, the t test were used and the significance level was determined as .05. In the Dynamic, Static and PNF flexibility groups, flexibility and vertical jump development were found statistically significant (p< 0.05). The greatest development in terms of flexibility was observed in the PNF group, however, the greatest improvement in the jump was observed in the Dynamic group. As a result, it can be said that static, dynamic and pnf flexibility exercises have an effect on vertical jump performance. The effect of dynamic flexibility on the vertical jump was larger than the other flexibility groups.