Different studies in Africa and elsewhere show that the epidemiology of HIV/AIDS is highlyrnrelated to the process of migration. In most sub-Saharan African countries mobility andrnHIV/AIDS are linked to heterosexual transmission; fueled by rampant STDs, multiple andrncommercial sexual relations, low condom use, poor access to health services and other socioculturalrn& economic factors related to population movement.rnIn Ethiopia, though various researches have been made to assess the sexual behaviors ofrndifferent population groups, still there is lack of studies that address the sexual behaviors ofrntransient rural migrants. This cross-sectional survey conducted from May to June 2006, triedrnto investigate the magnitude and determinants of risky sexual behaviors for HIV/AIDSrnamong male migrant daily laborers in Kombolcha town, North east Ethiopia.rnA total of 420 daily laborers with a response rate of 99.5% for the quantitative and 36rndiscussants for the qualitative part participated in the study. More than a third (36.2%) ofrndaily laborers was found to be currently sexually active. Among the currently sexually activernrespondents, 43.4% and 55.9% admitted practicing sex with multiple sexual partners andrncommercial sex workers respectively. Having multiple sexual partners was positivelyrnassociated with longer duration of stay in the town [AOR (95% CI) = 2.34(1.04, 5.27) andrnchewing khat 2.30(1.02, 5.16) . Whereas practicing sex with commercial sex workers wasrnassociated with longer duration of stay in the town [AOR (95% CI) = 2.33(1.06, 5.13)],rndrinking alcohols 2.60(1.12, 6.02)] and chewing khat 4.16(1.46, 11.8)].rnAlthough 57.9% of the currently sexually active respondents had experience of condom usernduring their stay in the town, only 34.9% were consistent users. Better educational levelrn[AOR (95% CI) = 2.88(1.05, 7.94), not drinking alcohols 2.57(1.10, 6.00), full timernaccessibility of condom 3.22(1.18, 8.82) and self HIV/AIDS risk perception 3.58(1.29, 9.98)]rnwere factors associated with consistent condom use.rnIn conclusion, the prevalence of high risk sexual behaviors among the study population wasrnhigh. There was a gap between knowledge on HIV/AIDS and sexual behavior ofrnrespondents. Therefore, urgent health education program that aimed at bringing behavioralrnchange (BCC) should be planned and implemented by giving more emphasis on thernidentified risky sexual behaviors.