ABSTRACT This research is the advancement of research entitled "Analysis of the development of Islamic Perspectives in International Relations in Indonesia" which found that one of the problems of scientific publications lack related to Islamic International Relations in Indonesia is relevant to the methodology of the Islamization of International Relations. This condition reminds us of the vital role and urgency of developing Islamic International Relations methodology. In response to this, it is necessary to analyze the development and applying the methods of Islamic International Relations in Higher Education in Indonesia, in this case, the University of Darussalam Gontor (UNIDA Gontor). UNIDA Gontor was chosen because it has officially declared itself as the centre of the Islamization of knowledge in Indonesia. This study aims to analyze the development of the methodology of Islamic International Relations at UNIDA Gontor to then be compared and evaluated for its application in several other tertiary institutions in Indonesia. This type of research uses descriptive qualitative by taking a research location in the Darussalam University of Gontor Ponorogo. Data collection techniques through observation, interviews and limited discussion. The data analysis through an interactive model with a four-component analysis approach, namely: data reduction, data analysis, data clarification and drawing conclusions, which are carried out in an active, interactive form with resource persons as primary data sources supplemented by several secondary sources. This research found that UNIDA Gontor in developing the methodology of Islamic International Relations used several existing methodological approaches to the Islamization of knowledge and developed Islamization methods model independently for university-level and several branches of knowledge, in this case specifically the International Relations. Keywords: Islamization, International Relations, Methodology, UNIDA Gontor