This paper examined the psycho-social predictor of anti-social behaviours among adolescents in secondary schools in Ijebu North Local Government Area of Ogun State, Nigeria. two hypotheses were developed by the researcher. The descriptive research design of the ex- post facto type was adopted for this study. The population of this study comprises of all adolescent students in public secondary school in Ijebu North Local Government Area of Ogun State. The study sample consisted of one hundred and fifty (200) respondents from five public secondary schools in Ijebu North Local Government.