This book examined the effects of HIV/AIDS awareness on the sexual behavior of students in tertiary institutions in Nigeria. The students were randomly selected from one university in Nigeria; the University of Ilorin, Kwara State. The book shows a high awareness of HIV/AIDS. However, despite the awareness of the consequences of HIV infection,risky sexual behavior is high with high number of reported Participants engaging in sexual activity. In addition, the book shows that a relationship exists between age of respondents'' first sexual intercourse as well as between the place of residence and sexual experience.