A cross sectional study design, consisting serological and questionnaire surveys, was appliedrnto assess the occurrence of leptospirosis in cattle and humans in Wonji from October 2008 tornApril 2009. Consequently, the seropositivity percentage for leptospirosis in human patientsrnvisiting hospital and health center in Wonji and the seroprevalence of Leptospira interrogansrnsv Hardjo in apparently healthy cattle was determined by using Leptospira IgM ELISA andrnLeptospira Hardjo antibody ELISA respectively. The overall seropositivity percentage ofrnhuman leptospirosis was found to be 72.S% (n=298) and that of cattle was 30.4% (n=204). Inrnthis study assessment of risk factors associated with human leptospirosis was carried outrnbased on semi-structured questionnaire survey. Regardless of wide distribution of the riskrnfactors included in this study, statistical analysis of relationship between the variables showedrnthat only occupation, animal contact and sampling sites were significantly associated (p