This study investigated Korean-as-a-foreign-language (KFL) students' foreign language anxiety (FLA) in relation to five affective variables (i.e., unwillingness to communicate, classroom risk-taking, classroom sociability, motivation, and self-efficacy) as well as to self-rated Korean proficiency. One hundred and fifty-two KFL students who were enrolled in Korean classes in a large public university in Australia completed survey items for the study. Overall, KFL students in Australia showed moderate levels of anxiety (M=2.79) and unwillingness to communicate (M=2.58). Additionally, their levels of motivation (M=3.92) and self-efficacy (M=3.41) were high. Five affective variables were proven to be significantly related with FLA: a positive correlation between FLA and unwillingness to communicate; and negative correlations between FLA and classroom risk-taking, classroom sociability, motivation and self-efficacy. Among the variables, self-efficacy and self-rated overall Korean proficiency were found to be the best predictors of FLA.