The study investigated the roles of librarians in curbing prostitution in Nigerian Universities. Some concepts like meaning and types of prostitution why people engage in prostitution, the kind of people that partake in prostitution and the impact of prostitution were discussed. It was discovered that certain factors were responsible for people engaging in prostitution, including poverty, lack of parental care, and peer-group influence among others. However, some challenges were encountered, and the role librarians play in curbing prostitution was enumerated. It was recommended that librarians need information literacy on students who are part of these vices and also use Nigerian Library Association (NLA) to help such people set up businesses their own no matter how small. Federal government and NGOs need to provide entrepreneurship education and skills for the people involved to replace the abnormal trade as these were provided as part of the solution to this form of trade.