Abstract-Functioning as a mediating factor between having communicative competence in the target language and putting this competence to use, willingness to communicate (WTC) has enjoyed scholars' attention in the field of second language acquisition (SLA). The present quantitative study examined the contribution of Iranian EFL learners' linguistic self-confidence in their proficiency and language-use anxiety to their WTC level as well as the possible impact of age and gender on learners' reported L2 WTC. 188 university students, who were randomly selected, filled in a questionnaire, and correlation analyses, one-way between-groups ANOVA, independent-samples t-test, and standard multiple regression were run to analyze the collected data. Results indicated that L2 self-confidence made a significant contribution to the prediction of L2 WTC. Moreover, it was found that learners' age and gender did not make a statistical difference to their WTC. The findings could inform debates on the theory and practice of WTC and feed into further pertinent research in second language pedagogy.Index Terms-willingness to communicate, language-use anxiety, linguistic self-confidence