ABSTRACT… Objectives:To determine the frequency of Pulmonary Tuberculosis in Pemphigus Vulgaris patients on immunosuppressive therapy for more than one year. Study Design: Prospective Cross Sectional. Plan and Duration of Study: The study was conducted at Dermatology department Civil Hospital Karachi (a tertiary care hospital affiliated with Dow University of Health Sciences). It was conducted from January 2016 to June 2016. Material and Methods: The study included 31 diagnosed cases of Pemphigus Vulgaris patients on immunosuppressive drugs for more than one year. These patients were either admitted in dermatology ward CHK or presented in CHK OPD. A Pro-forma was used to record the history, physical examination and results of screening tests. Results: Out of 31 Pemphigus Vulgaris patients who were on immunosuppressive drugs for more 1 year, 3 patients (9.6%) developed Pulmonary Tuberculosis. Conclusion: Patients of Pemphigus Vulgaris on long term immunosuppressant drugs can develop Pulmonary Tuberculosis.