Objective: This study investigated the effects of physical therapy, including exercise, manual therapy, and physical agent modality, on joints, muscle strength, and mobility of patients with hemophilia. Methods: PubMed, Embase, MEDLINE, Cochrane Central Register of Controlled Trials, Web of Science, and Scopus were searched from inception to September 10, 2022. Randomized controlled trials comparing pain, range of motion, and health of joints, as well as muscle strength and mobility (timed up and go test) between physical therapy and control groups were included. Results: Fifteen randomized controlled trials with 595 male patients with hemophilia were included. In comparisons between physical therapy and control groups, physical therapy significantly reduced joint pain (standardized mean difference = −0.87; 95% confidence interval, −1.14 to −0.60), increased joint range of motion (standardized mean difference = 0.24; 95% confidence interval, 0.14-0.35), enhanced joint health (standardized mean difference = −1.08; 95% confidence interval, −1.38 to −0.78), improved muscle strength (standardized mean difference = 1.42; 95% confidence interval, 1.16-1.69), and timed up and go test performance (standardized mean difference = −1.25; 95% confidence interval, −1.89 to −0.60). The comparisons demonstrate moderate to high evidentiary quality grades. Conclusions: Physical therapy is effective in reducing pain, increasing joint range of motion, enhancing joint health, as well as improving muscle strength and mobility in patients with hemophilia.