AIM To test the hypothesis that the functional outcome of hip fracture patients who receive weekend rehabilitation is better than that of similar patients who undergo non-weekend rehabilitation. METHODS The present retrospective observational study used data from the Japan Rehabilitation Database spanning 2005-2015. We identified in-hospital hip fracture patients admitted to acute hospitals. After applying exclusion criteria, 469 patients were eligible. The primary outcome was motor Functional Independence Measure (FIM) efficiency. RESULTS Of the patients with hip fracture, 68.0% received weekend rehabilitation. The patients who received weekend rehabilitation had significantly higher scores in motor FIM efficiency (mean 1.08 vs 0.73, P < 0.001), FIM efficiency (mean 1.12 vs 0.79, P = 0.001) and shorter length of stay (mean 32 vs 54, P < 0.001) than the patients without weekend rehabilitation. Multivariate linear regression analysis identified the weekend rehabilitation as a significant factor in motor FIM efficiency (coefficient 0.237, 95% confidence interval 0.074-0.400, P = 0.004), FIM efficiency (coefficient 0.235, 95% confidence interval 0.079-0.391, P = 0.003) and length of stay (coefficient -9.649, 95% confidence interval -18.194 to -1.104, P = 0.027). CONCLUSIONS The present cohort analysis showed that weekend rehabilitation for hip fracture patients can lead to functional recovery and reduce the length of stay. Geriatr Gerontol Int 2018; 18: 1143-1146.