Demotivation in learning English is a common problem faced by students and it can hinder them to achieve their target language proficiency. Students who face difficulties in learning English are often demotivated to learn. This research was aimed at finding out the students demotivating factors in learning English among vocational high school in Yogyakarta. The descriptive phenomenology research was used as the research design. The research took place at one vocational high school in Yogyakarta. Three students at the third grade in the first semester become the participants of this research. The data were collected through the interviews. There were five main findings found related to the research question which is about the students’ demotivating factors in learning English. Those were teachers’ method of teaching, students’ lack of self-confidence, classroom environment, teaching materials, teachers’ attitude and unsupportive peers