Back ground of the study: Perinatal mortality is a death of fetuses weighing at least 1000gm orrn28weeks of gestation or more if weight is not available and death of live newborn before the agernof 7 days. It makes three fourth of the deaths of the neonatal period and widely used as a healthrnindicator for newborn care and reflects prenatal, intra partum and newborn care.rnObjective: To assess factors associated with perinatal mortality among hospital deliveries inrnselected hospitals of Addis Ababa, Ethiopia.rnMethods: An unmatched case control study using secondary data as a source of information wasrnconducted. A total 1113 samples (376 cases and 737 controls) were recruited from four publicrnhospitals of Addis Ababa. Cases were still births and early neonatal deaths and controls were livernbirths and neonates who were discharged alive from the hospital and did not die before the age ofrn7 days. The study period was from January 1st up to February 30/ 2015. Epi-Info version 7.0 andrnSPSS Version 21 were used for data entry and analysis respectively. Descriptive statistics usingrnmeasure of central tendency and dispersion, frequencies, proportions and diagrams was used torncheck its distribution and describe the study population in relation to relevant variables. Logisticrnregression model was used to identify the important factors that are associated with perinatalrnmortalityrnResults: The mean age of the mothers for cases and controls were 26.47+4.87 and 26.95+4.68rnrespectively. Five hundred ninety seven (53.6%) mothers delivered for the first time. Obstetricrncomplication occurred in 64.4% of cases and 43.8% of controls. Factor that are significantlyrnassociated with increased risk of perinatal death were birth interval less than 2 yearsrn(AOR=4.55; 95%CI(1.79-11.54), preterm delivery (AOR=4.55;95%CI(1.79-11.54)),rnanemia(AOR= 2.6;95%CI(1.38-4.91) and the others were congenital anomaly, previousrnhistory of early neonatal death and low birth weight).Use of partograph was another factor thatrnis associated with decreased risk of perinatal mortality (AOR=0.35; 95%CI (0.18-0.66)).rnConclusion & recommendation: From factors that are associated with perinatal death, some ofrnthem can be prevented with early investigation of pregnant mothers up on their follow up tornidentify abnormalities and manage them accordingly. In addition, appropriate labor follow uprnand monitoring with regular use of partograph, immediate newborn care and interventions torndelay birth interval should be addressed