BackgroundrnAcute kidney injury (AKI) is a major health problem, causing morbidity in 13 million people annually,rnamong which, 85% occur in developing countries. It is therefore one of important issue in Africa wherernthere is resource limitation at large, and appreciation of its pattern can help understand it’s causes,rncomplications and outcome better which are determinants for its early prevention and management.rnObjectivernTo evaluate Patterns and outcome of AKI patients who are admitted in Tikur Anbessa specializedrnhospital(TASH)Adult Emergency Unit, Addis Ababa, EthiopiarnMethodologyrnProspective Crossectional study was done from August 1, 2018 to May 1, 2019.:The research was done atrnTASH adult ED. SPSS software version 25 was used for analysis. The area selected for this research wasrnTASH adult emergency unit, Addis Ababa, Ethiopia where the sample was collected from the patientsrnwho fulfill the inclusion criteria. SPSS software was used for analysis. Binary logistic regression wasrndone for identification of mortality predictors. Patients’ laboratory results on admission and dischargernwere compared by paired samples T-test. Survival time was estimated by Kapan- Meier and log rank testrnwith a 95% CI. A P-value of