Abstract : Muscular imbalance plays one of the key factors for impaired relationships between the muscles which prone to the tightness that loses extensibility, and those prone to inhibit loses its normal strength thereby leads to weakness. Individuals with unilateral neck pain exhibit significantly less low trapezius strength on the side of neck pain when compared to the contralateral side. There is a strong association between lower trapezius muscle weakness and neck pain. Hence this study was aimed to compare the effectiveness of lower Trapezius strengthening with isometric neck exercises over lower Trapezius strengthening in relieving pain and reducing disability in patients with chronic neck pain. A comparative study was done for 30 patients with recurrent chronic neck pain were chosen using convenient sampling method from Isari Mission Hospital, Thalambur were picked based on inclusion criteria and Exclusion Criteria They were then divided into two groups Group A – experimental group and Group B – control group and followed up for 2 weeks. The pre-test and post-test values were assessed for the Numeric Rating Scale (NRS), Neck Disability Index (NDI) and Manual Muscle Testing (MMT – MRC). The paired t-test revealed that there was a significant decrease in pain among group A (lower trapezius strengthening with isometric neck exercises) than group B in patients with chronic neck pain. The conclusion of the study is that there was the effectiveness of lower trapezius strengthening with isometric neck exercises in Group A than in Group B in relieving pain and reducing disability in patients with chronic neck pain