The study investigated socio-demographic predictors of alcohol consumption risk behaviours among secondary school adolescents in Nsukka Local Government Area, Enugu State. Four research questions an three null hypotheses were formulated to guide the study. A descriptive survey design was adopted for the study. A sample of 389 secondary school adolescents which was drawn from a population of 10, 215 secondary school adolescents from 31 public secondary schools was used for the study. Structured questionnaire titled “Socio-Demographic Predictors of Alcohol Consumption Risk Behaviour Questionnaire (SDPACRBQ) with reliability coefficient index of .86 was the instrument used for data collection. Mean statistics was used to analyze data collected in relation to research questions while t-test statistics was used to test the null hypotheses at .05 level of significance. The findings of the study were that; secondary school adolescents in Nsukka LGA involved in alcohol consumption risk behaviour to a high extent (2.17), alcohol consumption.