Cultism activities have turn most of the school into citadel of violence as many lives and property have lost and damaged. Realizing the havoc which cultism has wrecked on both members and non-members of the academic community, all hands must be on deck to combat the menace. It is on this notion that the research examines the role of public relations as a veritable tool for eradicating cultism in tertiary institution in Nigeria using Obafemi Awolowo University Ile-Ife as a case study. In this research the Four Models of Grunig’s and Hunt’s PR Theories was used. The research design for the research was quantitative method with survey research method chosen. Multistage sampling was used to select respondents within OAU with 100 copies of questionnaires were administered to respondents while 90 copies were retrieved. The data collected were analysed and interpreted using simple percentage and table (Descriptive Statistics). Findings show that Public relations play its part in curbing cultism by organizing anti-cultism workshops and lectures on campus, erection of anti-cultism billboard in order to inform students of dangers of being a member. It was recommended that more punishment and sanctions should be implemented on students so as to reduce or cub the menace.