The Objective of this study was to determine the effects of Vinyasa sun salutation on flexibility in school going children. The subjects for this study were selected from the Vivekananda public school, Gwalior. A total of 30 boys subjects were selected and used as one experimental group (15) and other control group (15). Vinyasa was considered the independent variable and hip joint flexibility was considered the dependent variable. Flexibility was measured in degrees by Goniometer. Training was given 3 times in week; each session scheduled for 45 minutes. The Pre Test Post Test randomize group design was used for this study. Tests were administered before the training program and after the completion of the treatment again test were administered. ANCOVA was used to locate significance effects of Vinyasa on Flexibility in school going children at 0.05 levels of significance. In relation to Flexibility, effect of Vinyasa was found significant.