Background:Cheiloscopyisaforensicidentificationtechniquesbasedonpatternsofwrinklesandgroovesonthe mucosalsurface ofthelip, calledlipprints. Theunique characteristicsoflipprintsanditsdifferentamonghumanbeingcouldbeusedinidentifypeople.Objective:Theaimofthisstudyistoidentifywhetherthereisacorrelationbetweenlipprintsinsexualdimorphismof studentsofFacultyofDentistry,TheUniversityofJember,ornot.Method:Thedescriptiveobservationalstudyiscrosssectionalapproach.Thesubjectsofthisstudyare80students,comprisingof40malesand40females.Result:Theresultshowedthatthereweredifferenceslipprintspatternbetweenmaleandfemale. Themostdominantlipprint patternin malewastipeIII 16 (40%), whereasthemostdominantlipprintpatterninfemalewastipeI’14(35%).Conclusion:Thedifferencesoflipprintspatternbetweenmaleandfemaleshowedthatlipprintspatterncouldbeused inforensicidentification.Keywords:forensicidentification,lipprintspattern,sexualdimorphism