Self-confidence has a significant impact on the success of learning a foreign language. Consequently, students necessary to build good self-confidence. However, students still have a low level of self-confidence caused of certain factors. This research was aimed to describe the factors influenced self-confidence on speaking performance with the tittle “The Factors Influence Self-Confidence on Speaking Performance”. A research conducted at the fourth semester students of English Department. This research is focused on findings participants’ factors that Influence their self-confidence on Speaking Performance. The methodology used for this research is descriptive qualitative research. The result of this research showed that all of the students which participated in this research had low level of self-confidence on speaking performance based on Stephan Krashen [1]. This is influenced by several factors. The first factor is anxiety factors caused by a lack of mastery of the linguistics elements like vocabulary, pronunciation, and grammar. The second factor is self-esteem factors caused by judgments of other people. The third factor is motivation factors that comes from within the students and comes from outside or environment. The researcher hopes this research will help the next researcher who has the researcher related to this research.