The purposes of the study were: (1) To investigate the significant correlation between learners’ foreign language anxiety and willingness to communicate in English in the context of English department learners at Mulawarman University in the academic year 2021/2022. (2) To investigate the significant correlation between learners’ beliefs about language learning and willingness to communicate in English in the context of English department learners at Mulawarman University in the academic year 2021/2022. A correlational research design with regression analysis was applied in this study. The population on this study was 183 students while the sample taken were 124 samples. There were three data in this study, namely data on learners’ foreign language anxiety, belief about language learning and willingness to communicate in English. The data were taken throught questionnaire which distributed online through google form. The questionnaires that used in the study were: 1) Foreign Language Anxiety Class Scale which used to measure learners’ foreign language anxiety, 2) Belief About Language Learning Inventory which used to measure learners’ belief about language learning and 3) Willingness to Communicate In English Questionnaire which used to measure learners’ willingness to communicate in English. The finding of the study showed that between learners’ foreign language anxiety and belief about language learning simultaneously contributed to learners’ willingness to communicate in English. Furthermore, each independent variables were also found to correlate to learners’ willingness to communicate in English in positive way. In order to measure the correlation between the variables, simultaneous testing was carried out to show whether all independent variables had a significant effect simultaneously on the dependent variable. Based on the results of the table above, the value of Sig. F was (0.000) because the value of Sig F (0.000) < α = 0.05, then reject H0. So, it could be concluded that there was an influence of variables X1 and X2 on Y simultaneously. Therefore, this study proved that there was a significant correlation between Learners’ Foreign Language Anxiety and Belief About Language Learning and Willingness To Communicate In English In The Context of English Department Learners at Mulawarman University in The Academic Year 2021/2022.