This study compared the effects of Pilates and spine stabilization exercise on women with chronic low back pain for 8 weeks. Twenty-four women aged 20-45 years with non-specific chronic low back pain were recruited and divided into two groups: Pilates (PG, n=11) and spinal stabilization exercises (SG, n=13) who received an intervention program consisting of 50 minutes per session, twice a week for 8 weeks. Lumbar lordosis angle, lumbar extensor strength, ODI, and VAS were evaluated to determine the effectiveness of the intervention. Both groups showed improvement in lumbar lordosis angle and lumbar extensor strength after the intervention, with no differences between the groups. However, the Pilates group was more effective in improving low back pain symptoms as measured by the ODI and VAS. Therefore, the use of Pilates in female patients with chronic low back pain can be recommended for inclusion in rehabilitation exercise programs for the improvement of chronic low back pain because it improves lumbar lordosis angle and extensor strength and is more effective than spinal stabilization exercises in reducing low back pain symptoms. Future studies should include larger cohorts and long-term validation of efficacy and determine the exact causal relationship between changes in lumbar lordosis angle and low back pain.