This paper entitled " An Analysis of Language Style Used By Kim Namjoon In His Speech In United Nations In 2018†is a study of the style of language used by Kim Namjoon in his speech at the United Nations. This study uses the style of language proposed by Martin Joos. This study aims to determine the type of language style used in Kim Namjoon's speech at the United Nations. This study uses a qualitative descriptive method by drawing conclusions from the thesis as a source of data. Based on the analysis, it was found that there are types of figurative language that occur in Kim Namjoon's speech at the United Nations. Namely the formal style, relaxed style, consultative style, intimate style and frozen style. There are several factors that influence the choice of language style, namely participants, setting, topic, and function. It can be concluded that he is dominant in using a formal style because of the situation, topic, and audience.