Paget's disease (PD) is a metabolic bone disease characterized by abnormal bone remodeling. The bone passes through different phases depending up on the osteoblast and osteoclast activity. The prevalence of the disease is rare in the Asian population. The vertebrae are the second-most commonly affected site. It may mimic metastatic spine lesions clinically and radiologically. X-ray, computed tomography (CT) scan, magnetic resonance imaging (MRI), and bone/positron emission tomography scan are used in aid of diagnosing the disease. The confirmation is by biopsy. Complications of the disease range from back pain to neurological deficits and malignant transformation. Here, we present a case of PD of thoracic vertebrae which is a rare entity in the Indian subcontinent. The patient presented with back pain and neurogenic claudication. MRI with CT correlation showed suspicion of vertebral malignancy and a biopsy was done which showed PD. He was treated with posterior stabilization using pedicle screws and rods. The importance of this case report is to present a case which is rare in the Indian population and to make awareness regarding PD as one of the differentials in vertebral lesions.