Background: Inability to extend knee completely when hip is flexed along with pain over posterior thigh is hamstring muscle tightness. Aim: To compare the effects of post isometric relaxation and static stretch combined with stabilizing exercises on hamstring flexibility in young adults. Methodology: 30 subjects were included in the study. They were divided into 2 groups. Each group contained 15 Subjects with hamstring tightness with age group of 18-25 years. Group A was given post isometric relaxation and Group B was given static stretch with stabilizing exercises. Each group undergone a 6week exercise program including one physiotherapy session per week and 6 sessions of daily home exercises per week. Result: Static stretch with stabilizing exercises shows significant difference (p<0.0005) in finger to floor test and popliteal angle test when compared to Group A. Conclusion: Both the techniques are effective but when compared between the two static stretch proved to be more effective.