The age at first marriage has long been considered an issue oFprimary interest in the disciplinesrnof marriage and the family as well women's studies. The issue has been taken on even greaterrnimportance recently due 10 the impact of a trend towards rising at first marriage on fer tililyrnlevels, with further potentiallilr-reaching demographic, economic, and social ramifications, andrnalso affected by these factors.rnThis study is primarily aimed 01 delermining imporlanl socio-economic and demographic faclorsrninfluencing age at first marriage among women of reproductive age residing in Addis Ababa.rnLiFe time event history data ('()/lecled Fom a total of 598 women of reproductive age grouprn(i.e15-49 years), who were li1'ing in Addis Ababa continuously starting fi'om age 12 or birthrnwere analyzed using descriplive, survival plot and Cox regression models. Descriptive andrnsurvival plot were used to show/he di/!erenlial in age at/irstmarriage among different subgrouprnof covariate whilst , Cox regression was used as a multivariate analysis tool to measure the netrneflect a/each covariate to e/fectil>eiy utilize the samples who were not married so filr at the timernof survey.rnResults of bivariate analysis show that there is an increasing trend in mean age at first marriagern(from 27to 29 years), and proportion o(never married ((rom 53 to 60 percent) between 1995 andrn2009. The result of Cox regression on the other hand, revealed that educational leve/,rneducational enrollment, work s/atlls as well as mother 's education are the 1I10st impol'lanl/actorsrnplaying sign ificant roles in determining o( age at first marriage amonglemale residents of AddisrnAbaba.