Background: Upper cross syndrome (UCS) refers to the altered muscle activations and movement patterns in scapulae along with some abnormal alignment in the upper quarter, which may contribute to the dysfunction of the cervicothoracic and glenohumeral joints. It is one of the commonest postural disturbances which can cause neck pain; rounded shoulders, forward head posture. Iyengar yoga is a form of Hatha yoga with key aspects of correct alignment of the body and sequences of postures which focuses on improving muscle strength and flexibility. Objective: To investigate the effectiveness of the Iyengar yoga exercises on the postural angles i.e., craniovertebral and shoulder angles in college going students with upper crossed syndrome. Methodology: This randomised controlled trial, was conducted at the College of Physiotherapy, Miraj Medical Centre, Wanless Hospital, Miraj. 74 physical therapy students aged between 18 to 25 years affected with UCS, having a shoulder angle less than 52°, a craniovertebral angle less than 50° were purposefully recruited for this study, who were randomised into 2 equal groups. The experimental group performed Iyengar yoga exercises 3 times a week for 8 consecutive weeks and control group maintained normal daily activities. The craniovertebral and shoulder angles were measured the degree of forward head posture and rounded shoulder posture respectively from standing position by photogrammetry at baseline and after 8 weeks. Results: The within group comparisons revealed significant changes in craniovertebral and shoulder angles of intervention group after 8 weeks. The between group comparisons indicated that 8-week Iyengar yoga exercise program significantly improved craniovertebral (p=0.001) and shoulder (p=0.001) angles. Conclusion: The 8-week Iyengar yoga exercise program has successfully decreased the degrees of forward head and rounded shoulder. The present study demonstrates that the Iyengar yoga exercises for the individuals with UCS is feasible and effective method which optimises cervical and shoulder angles and thereby improving the spinal alignment and posture.