The study was set out to investigate prevalence of sexual harassment of students of Technical higher institution using Osun State Polytechnic, Nigeria as a case study. Two research questions and two hypotheses were formulated to guide the study with the aid of questionnaire. Related information were gathered on 203 students across all the faculties and levels (ND 1&2, HND 1&2). The descriptive statistics of frequency distribution and percentage were employed with inferential statistics of correlation analysis to test the formulated hypotheses at 0.05 level of significance. The study found out that: there is prevalence of sexual harassment of students in tertiary technical institutions. Sexual harassment of female students were carried out through inappropriate sexual comments, unwanted touching of female students and other seductive ogling. The findings revealed that students have knowledge, awareness and perception of what sexual harassment entails. One of the recommendations is that authorities of tertiary educational institutions should enshrine behaviours indicative of sexual harassment entrenched into the conditions of service of staff of tertiary education as well as faculty and students handbooks to create the needed awareness