Back ground: Trauma is a leading cause of death and disability all over the world. Managementrnof injured patients in many circumstances involves a team effort that allows medical personnelrnwith special skills and expertise to provide care simultaneously with surgical leadership of thernprocess. Trauma management can be improved by implementing a trauma system that includesrninjury prevention, education and hospital care. In order to deliver timely organized and effectiverncare to the patient physicians who are competent, efficient are needed. rnOBJECTIVE: The aim of this study is to assess the knowledge and attitude of interns of threerndifferent medical school to ATLS from February1/2019 to July 31/2019.rnMethodology: Cross-sectional study method is conducted in selected medical schools: AddisrnAbaba University, St. Paul millennium medical college and Arsi University College of healthrnsciences. Data was collected from February 1/2019 to July 31/2018 by the principal investigatorrnand delegate person using structured questionnaires. The data is analyzed by using SPSS 22.0. rnResults: 172 out of 212 respondents filled and returned the quetionare.106 from AAU,40 fromrnSPHMMC,26 from Arsi University. Of the respondents, 112 (65.1%) were male the rest 60(34.9)rnwere female. Among the participants 12 (7%) has very good knowledge, 71(41.3%) has goodrnknowledge, 45(26.2%) has fair knowledge, 26(15.1%) has low knowledge, 18(10.5%) has veryrnlow knowledge about ATLS.98.8% of the participant interns have positive attitude towardsrnATLS .and most(85.5%) believe that it genuinely improves the management of trauma patient. rnConclusion: Doctors should be trained in ATLS before employment, or as early as possible inrntheir service lives. Most interns view ATLS positively and believe that it saves life and providesrngenuine practical benefit for patients