Shoulder pain is the most common complaint for swimmers of any level, the prevalence of which is reported to be between 40% and 91%. The term ‘‘swimmer’s shoulder’’ covers a spectrum of coexisting pathologies, with rotator cuff–related pain being the most common finding. Among many other variables, body roll has been proposed as a potential variable affecting shoulder pain, due to its potential to modify hand path and upper limb kinematics. This study aimed to identify potential differences in body roll between swimmers with and without shoulder pain. 24 competitive swimmers (21.5±4.8 years old) were recruited from several teams in Northern Spain. 12 were experiencing unilateral shoulder pain (6 male, 6 female) and 12 were healthy swimmers (6 male, 6 female). Their body roll was measured during 3 sets of 100m front crawl swimming at three different speeds (slow, medium and fast). For this purpose, two tri-axial accelerometers were used, one at the shoulder level and one at the hip level to obtain body roll angles at these two different regions. The results showed no significant difference between the pain group and the control group for the breathing side roll at the shoulders (77.8º vs 80.3º) nor at the hips (62.9º vs 65º). Regarding the non-breathing side, swimmers with shoulder pain rolled significantly less than the control group at the hips (48.8º vs 56.7º, p=0.018, r=0.931), and no significant difference was found at the shoulders. These findings suggest that a potential relationship between hip rotation and shoulder pain may exist, but no cause-effect relationship can be inferred from this study due to its cross-sectional nature, and only one subgroup of shoulder participants (from a biomechanical perspective) was analyzed. Prospective studies should be carried out to further investigate the mechanisms associated with this relationship.