Anggi Diah PITALOKA Pengarang Rostanti Toba, M.Pd. Dosen Pembimbing 2 Bahrani, M.Pd. Dosen Pembimbing 1 Rostanti Toba, M.Pd. Ketua Penguji Nadia Sya'ya, M.Pd., M.TESOL Penguji 2 Muhammad Muklis, M.Hum. Penguji 1

Anggi Diah Pitaloka, 2020. “An error analysis in pronunciation of English vowels of the Sixth semester students of International Class Program of State Institute of Islamic Studies (IAIN) Of Samarinda in the Academic year 2019/2020”. S1 Thesis, Study program of English Education Department, Teacher Training and Education Faculty, State Institute of Islamic Studies of Samarinda. This research is under the guidance of Bahrani, M.Pd as the advisor I and Rostanti Toba, M.Pd as the advisor II. Pronunciation is very important to avoid misunderstanding when people are communication. If it pronunciation is wrong, the meaning of the word changes. It can make someone not understand what we are saying. Many students still have error pronunciation. In IAIN Samarinda, Non-English studies are given English lessons like TOEFL, Public Speaking and language intensive. The lesson is not far from pronunciation, grammar, speaking, reading and listening. They are the students of International Class Program (KKI). The objective of research is to know is the students’ English vowel pronunciation error at the sixth semester of Islamic Studies of International Class Program of state Institute of Islamic Studies (IAIN) of Samarinda. The research used descriptive qualitative. The main instrument is test. This research is carried out on the sixth semester students of International Class Program (KKI) of State Institute of Islamic Studies of Samarinda in the year 2019/2020. There are 15 students as participants.