Abstract
The study investigated personality traits as a determinant of antisocial behaviour of students in universities in South East, Nigeria. This study was prompted by the University students engaging in some antisocial activities such as breach of school rules and regulations, destruction of public and school property, fighting and assaults, examination malpractice, among others. The correlational survey research design was adopted for the study and the study area was South East Nigeria with a population of 60,734 third year students in both federal and state universities. A sample of 1,250 third year students was employed through a multistage sampling procedure. Data collected were analysed using correlational analysis and t-test to answer the research questions and test the null hypothesis. The findings of the study revealed that personality traits have a significant influence on students‟ antisocial behaviour in both federal and state universities with an implication that if these behaviour are not monitored, it may lead to more social vices like cultism, armed robbery among others. Thus, it was recommended, among others that students should be encouraged through seminars to maintain good personality traits in order not to engage in antisocial activities in school.