BACKGROUND: Stroke leads to neurological deficits, cognitive and musculoskeletal defects. Stroke patients neglect the hemiplegic side and visual neglect also occurs. In stroke, exaggeration of stretch reflex results from abnormal management of sensory input. OBJECTIVE: To determine correlation between action research arm test (ARAT) and Range of motion (ROM) of shoulder, elbow and wrist joint in all degree of freedom in chronic stroke patients. METHODS: It was a randomized control trial. Sample size was 41. Data collection was done from DHQ Hospital Jhelum. Conventional treatment was applied to control group and conventional treatment with neurodynamics was applied to experimental group, 10 rep/ set, 1set/ day, 3 days/week for 6 weeks. 0, 3rd and 6th week assessment was done through goniometry and action research arm test (ARAT). Correlation analysis was done through SPSS version 21. RESULTS: Spearmen correlation analysis was done through SPSS version 21. The result of study indicates that value of r was (0.753-0.772) for shoulder flexion, (0.655-0.609) for shoulder extension, (0.734-0.742) for shoulder abduction, (0.627-0.688) for shoulder internal rotation, (0.585-0.560) for shoulder external rotation, (0.598-0.748) for elbow flexion, (0.088-0.240) for elbow extension, (0.633-0.547) for forearm supination, (0.584-0.649) for forearm pronation, (0.511-0.640) for wrist flexion, (0.561-0.602) for wrist extension, (0.496-0.460) for radial deviation, (0.464-0.459) for ulnar deviation and (0.750-0.783) for thumb abduction. CONCLUSION: This study concluded that there was moderate to strong correlation between action research arm test (ARAT) and range of motion (ROM) of shoulder, elbow and wrist joint in all degree of freedom in chronic stroke patients. This study also determined that there was low correlation between ARAT and range of elbow extension. CONTRIBUTION OF PAPER: • Present research investigated the correlation of action research arm test (ARAT) with upper extremity range of motion (ROM) and determined that there was moderate to strong correlation between action research arm test (ARAT) and upper extremity range of motion (ROM). • There were no studies in the past to determine the correlation between action research arm test and upper extremity range of motion in chronic stroke patients. • Few studies were done which determined the correlation of Action research arm test with other assessment scales like Fugl Meyer assessment scale and mental status scale.