Tuberculosis (TB) is killing a number of people in Ethiopia. This study was designed to assess the knowledge, attitude and practices (KAP) among Selam Health Center outpatients/attendants on TB in Gullele Sub city Addis Ababa, Ethiopia. A cross sectional research design was applied to measure differences between or from among individuals 18 and above years of age. The data were collected using well-structured questionnaires. The data were entered and statistical analysis was performed using SPSS version 20 software. Association between variables was done using chi-square and statistical significance was considered at p- value