The aim of this article is to investigate changes in the interpretation of Korean objects in overseas museums in accordance with the different levels of a curatorial agent based on a case study of a moon jar exhibited at the British Museum. Change in the subject of the curation of Korean exhibitions in overseas museums is closely related to the stages of the development of Korean cultural diplomacy policy. South Korean cultural diplomacy policy and international museum practice, particularly in the British Museum, can be divided into three distinct periods: the 1980s, when touring exhibitions were held; the 1990s, when permanent Korean galleries were established; and the 2000s onwards, when special exhibitions and cultural programs were arranged. This analysis connects the primary research theme – the historical context of each period of cultural diplomatic policy – with shifts in the interpretation of a specific object, a moon jar at the British Museum. Based on a qualitative research methodology including archival research, semi-structured interviews, and field observations, this research lies within the theoretical framework of the New Museology: a discussion of 1) museums’ role as cultural institutions in which political discourses are embedded in the exhibitions of specific cultures; 2) the major participant (the curatorial agent in this article) as a pivotal contributor to the meaning-making process; and 3) the presupposition of constant shifts in the interpretation of specific cultural objects according to the particular time and space.