ABSTRACT Althaf Afida. Title: Analysis of Phonetic Transcription on Diphthong in Joko Widodo’s APEC CEO Summit 2014 Program Speech at Beijing China. Tadris Bahasa Inggris (TBI), IAIN Madura. Advisor, Nina Khayatul Virdyna, M. Pd. Key terms: Phonetic Transcription, Diphthong, APEC CEO Summit 2014, Speech, Joko Widodo. Linguistics has many branches. One of them is Phonology. It belongs to so…