Abstract: Tuberculosis (TB) is one of the 10 leading causes of death worldwide. In Sri Lanka, approximately one third of cases are not detected during routine practice. Poor contact tracing, inadequate detection, underutilization of MCs are major weakness in TB screening. The private sector provides 50% of outpatient services of Sri Lanka and this study aims to assess Knowledge, attitudes, practices among Private Practitioners (PPs) on TB patient detection and treatment in Kaluthara district Sri Lanka.