Objectives: The aim of this study is to investigate the effects of vitamin D levels on balance and fall risk on hemiplegic cases. Methods: In our descriptive study, a total of 152 patients who applied to the Physical Medicine and Rehabilitation Polyclinic with the diagnosis of Hemiplegia and were hospitalized in Maçka Ömer Burhanoğlu Physical Therapy and Rehabilitation Hospital between July 2020 and January 2021 were included. Results: A total of the 152 patients enrolled in the study, 57 were women (37.5%) and 95 were men (62.5%). The average age of the patients was 62.0± 12.7. The number of patients enrolled in the study was 19 (12.5%), 98 (64.5%), and 35 (23.0%). The number of patients with vitamin D Levels <12 ng/ml measured on the first day of hospitalization was 70 (46.1%), the number of patients between 12-20 ng/ml was 50 (32.9%), and the number of patients with >20 ng/ml was 32 (21.0%). Again, the vitamin D values measured on the last day of discharge of patients enrolled in the study were <12 ng/ml 46 (31.3%). In the study, the correlation between vitamin D levels during discharge and Berg Balance Scale score and İtaki Fall Risk Scale score was examined.; There is no difference between vitamin D level and Berg Balance Scale score at positive weak level (r=0.184, p<0.05) and İtaki Fall Risk Scale. (p<0.05). Conclusion: This study showed that vitamin D levels had positive effects on balance and decreased risk of falls in hemiplegia patients with low vitamin D levels.