Dwi Agustina Sari, S.Kep.,Ns.,M.Kep Pengarang

Introduction. Yogyakarta as student city many migrants from various regions in Indonesia went to study, one of them is from Papua. There are approximately 7000 Papuan students studying at various levels, in Yogyakarta. Based on the 2017 Papua Provincial Health Service, due to free sex in Papua Province until July 2017 there were 28,771 HIV-AIDS sufferers consisting of HIV 10,134 and AIDS 11,060. This study aims to know factors associated with sexual behavior in Serui Yogyakarta Student Dormitory. Methods. Type of research is descriptive cross sectional technique. Population is semester 1 - 8 students. Sample 70 respondents, purposive technique. The study was conducted March - April 2018 at the Serui Student Dormitory. Analysis of research using statistical tests logistic regression analysis. Results. Most of the respondents is male (58.6%), adolescents (17-25 years) 97.1%, Protestant Christians (82.9%), semester 4 (44.3%), civil servant parents' jobs (35.7 %), dating status (88.6%), sufficient knowledge (71.4%), good attitude (60%), and good premarital sexual behavior (92.9%). There is no gender relationship (p 0,282), age (p 0,909), religion (p 0,822), Semester (p 0,804), work of parents (p 0,338), status (p 0,865), knowledge (0,656), and attitude (p p 0.779) with premarital sexual behavior in Serui Student Dormitory, Yogyakarta. Conclusions and Recommendation. Sexual behavior is not influenced by factors studied by researchers. There may be other factors (which are not examined) that can influence sexual behavior, for example: information sources, social environment, and motivation that can be suggestions for future researchers. Keywords: Sexual behavior, serui student, Yogyakarta.