Patients with knee joint osteoarthritis have diminished proprioceptive acuity and balance leading to reduced postural stability thus deteriorating the functional performance of patients with osteoarthritis knee. Muscle weakness, proprioception disorder, high laxity, and excessive movements of the knee during walking have also been reported. These indicate that patients with knee osteoarthritis suffer from knee instability leading to poor balance. Hence the purpose of this study was to find the effectiveness of proprioceptive exercise on knee joint position sense and balance in patients with knee osteoarthritis. Methods: Sixty people with knee osteoarthritis fulfilled the inclusion criteria and were included in the study. and knee joint position sense was measured using universal goniometer and the balance was assessed using sharpened Rhomberg test (eyes open, eyes closed). Proprioceptive exercises were given for 4 times a week for 4 weeks. Result: The result of this study showed that there was a significant improvement in knee joint position sense (p<0.001) and balance (p<0.001) in patients with knee osteoarthritis. Conclusion: This study concluded that proprioceptive exercise for a period of 4 weeks shows significant improvement in knee joint position sense and balance in patients with knee osteoarthritis.