Background: Previous systematic reviews and meta-analyses have suggested core stabilization exercise as a conservative treatment approach for scoliosis. Objectives: To investigate the effects of sling exercise and unilateral core exercise on the angle, balance ability, and muscle tone in individuals with scoliosis. Design: Randomized controlled trial. Methods: Twenty-one students in their twenties with mild scoliosis were recruited as participants and randomly assigned to one of three groups: a sling exercise group (n=7), a unilateral core exercise group (n=6), and a combined sling and unilateral core exercise group (n=6). Two participants dropped out during the study. Each group performed its designated exercise program individually, three times per week for five weeks. Measurements of scoliosis angle, balance, and muscle tone were taken before and after the intervention. Results: The sling exercise intervention significantly reduced the scoliosis angle (P<.05) and significantly increased muscle tone on the convex side (P<.05). In the combined sling and unilateral core exercise group, a significant improvement in static balance ability was observed (P<.05). Conclusion: Among the core stabilization exercises applied to scoliosis, sling exercise may be considered a potential intervention for mild scoliosis.