The issue of cultism has in spite of many efforts at reducing it, soared up in the Nigeria's tertiary institutions. Cultism has cast gloom over the educational sector. It is repeatedly said that the youths are the future leaders but it is a little wonder what the future holds for the youth of this country which has a good proportion of her youth as secret cult member. It therefore became imperative to carefully redress the issue of cultism in our tertiary institution where reason should rule over emotion. Undoubtedly, the issue has assumed horrifying proportion as cultic violence thrives even more. The main purpose of this study was to find out the causes, effects and strategies to stop cultism in tertiary institutions in Nigeria. It was discovered from the study that cultism among the students of tertiary institutions is real and urgent solutions is needed by government and institution at large to curb it. The parents must work closely with the institutions authority to arrive at a lasting solution.