In this research, we intend to segment Indonesian Hotel Revenue Manager in using the Online Travel Agent supplier system (extranet). Revenue Manager behavior in using extranets is essential for Online Travel Agent because it determines the quality of information and competitiveness of products offered by Online Travel Agent to its customers. A thematic analysis of in-depth and semi-structured interview data on twenty-three hoteliers in five first-tier cities in Indonesia (Jakarta, Surabaya, Medan, Bandung, and Makassar) are used in this study to find the Revenue Manager segmentation themes. A thematic analysis of the interviewed data produced four types of revenue managers based on the use of channel managers, IT literacy, dependency on market managers, and activeness in communication. This research can contribute to introducing Revenue Managers segmentation to deal with Online Travel Agent suppliers systematically.