Obesity is a health problem in Indonesia. Data shown by Basic Health Research (Riskesdas) in 2013 described the prevalence of obesity in Indonesia as increasing annually. Obesity becomes a risk factor for many diseases, the example of it is a musculoskeletal disorder in the cause of mobility disorder. Victims of obesity are known to have limited movement and joint range of motion (ROM) reduction caused by mechanical hindrance in joint movement. This research is focusing on discovering the relationship between obesity and hip joint ROM reduction in students at the Faculty of Medicine Jenderal Achmad Yani University. This research is also using a correlation analytical layout with a cross-sectional approach. The research subject is consisting of 20 males and 38 females student members with a body mass index (BMI) of ≥ 25 kg/m2. Anthropometrical data and hip joint ROM are obtained from direct measurement of the subject. The data are descriptively analyzed then continued with Spearman correlation assessment. The result of this research is stating that there is a significant negative correlation between obesity and hip joint ROM flexion, extension, abduction, adduction, and exorotation (p < 0.05), except for hip joint ROM abduction in female (p > 0.05)also a significant positive correlation between obesity and hip joint ROM endorotation (p < 0.05). In conclusion, this research is showing that there are relations between obesity and hip joint ROM reduction in flexion, extension, abduction, adduction, and exorotation movements. Therefore, in a female group, there is no relation between obesity and hip joint ROM reduction in adduction.