Research has mainly focused on the causes and effects of foreign language anxiety (FLA), an affective factor that adversely affects speaking skills, while few studies have concentrated on how to decrease the level of FLA among English as a foreign language (EFL) learners. Moreover, research lacks the effects of the use of paralinguistic features on FLA among English EFL speakers. Thus, this study aims to investigate the effects of the use of paralinguistic features on FLA regarding speaking skills. The sample group of the study consisted of 40 EFL learners at an advanced level. The research was designed to be experimental and included four weeks of speaking activities that aimed to use paralinguistic features in EFL speaking classes. Results showed that the use of paralinguistic features in EFL speaking classes considerably decreases FLA in terms of communication apprehension and fear of negative evaluation, while it increases test anxiety. In light of the findings, it is recommended that paralinguistic features should be used in EFL speaking classes to decrease the level of FLA, and that their sample behaviors should be reflected in speaking tests.