Background of The Study: Chronic low back pain is defined as pain in the lower back that persistes for more than 12 weeks. Core stability is the ability to control the position and movement of the trunk over the pelvis to allow optimum production, transfer and control of force and movement to the terminal segment.

Aim of The Study: To compare the effectiveness of swiss ball exercise and pilates exercise along with interferential therapy for core muscle strengthening on chronic low back pain among college student.

Methodology: This study consists of 30 females between the age group of 18 to 25 years. They were allocated into two groups. Each group contains 15 members. Group A received Swiss ball ecercise along with interferential therapy and Group B receives Pilates along with interferential therapy for 4 sessions per week which is conducted for about 6 weeks. The outcome measure is NPRS, Double leg lowering test, Oswestry disability questionnaire.

Result: The mean value of NPRS in group A (4.066) is more than the NPRS in group B (2.066) and ODI in group A (28.393) is more than the ODI in group B (23.660). The mean value of DLLT in group A (56.66) is more than the group B (50.933).