This research attempts to analyze the promotion strategy in the event of the “Ngopi di Museum” (Coffee in Museum) Vol 3. The purpose of this study was to find out the promotion strategy of the Ngopi event in the Vol 3 Museum in attempt to increase the number of visitors at the Yogyakarta State University’s (YSU) Indonesian Educational Museum. This research is a qualitative research with qualitative descriptive method. The data collection techniques are done by interview method and documentation. The informants in this study were the owner of Cornella & Co, the head of Marketing Division Cornella & Co, the head of the event committee and Visitors of the event. Based on the results of research conducted by researchers, it was known that the promotion carried out by Cornella & Co on the Coffee Event at the Museum Vol 3 had gone according to plan. The promotion program goes through the stages of planning, implementing event promotions and evaluations. Planning stage determines promotion management, promotion goals, promotion goals, promotion strategies, promotional budgets. The implementation phase of the promotion carries out various types of event promotions such as mass media promotion, online media promotion, outdoor media promotion etc. While at the evaluation stage by conducting a comprehensive evaluation. Done at the Ngopi event committee dissolution meeting at Ngopi di Museum Vol 3, the shortcomings and advantages of the event promotion program were evaluated.