The study analysed the patterns of Sexually Transmitted Infections (STIs) among students in a Nigerian University. It is a retrospective study of 38,933 students who attended the University Health Centre from 2001 to 2005. The results showed that 1.8% of all the students who attended the clinic had STIs. The study also revealed that 85.26% of the students with STIs had candidiasis, affecting more of female students. Male students presented more with syphilis (2.43%) and gonorrhoea (2.01%). Also students of age group 21-30 years representing 44.49% were more affected with STIs due to the fact that this is the sexually active age group in keeping with reported cases worldwide. (Contains 4 tables.)