Abstract
Objective: To identify a prevalence of no condom use in the last five sexual relations between university students of the public institution of the North of Brazil. Methods: Cross-sectional study with 772 undergraduate students and postgraduate students. It was using a closed questionnaire with self-reported answers. The prevalence ratio of the variables was analyzed by Poisson regression. Results: Most of the participants are young, sexually active, single-partner adults who have used the condom at least once in the past five sexual encounters. The non-use of condoms was more prevalent among students with a single partner, over 40 years of age and attending the last periods of the courses. Conclusions: College students with a single sexual partner in final periods of the course are more vulnerable to Sexually Transmitted Infections due to the inconsistent use of condoms. The university can be an environment conducive to actions to promote sexual and reproductive health, which reach, especially students with a single partner and in the process of completing the course.