The Ombudsman Institution is an independent institution which functions to supervise the public service performance issues. The existence of this institution is considered important to increase the public service especially for the public service performance by the government or local government and its existence is guaranteed by law. Ombudsman in its progress reaches the provincial level and the This research uses the qualitative research method. The data gathered including the primary and secondary data. The primary data covers interview and observation data, meanwhile secondary data covers literature data and documentation. The analysis unit of this research is the Ombudsman Institution of Yogyakarta Special Region with the interviewed research subjects such as the Head, Institution Representative, Socialization, Cooperation, and Networking Unit, and Socialization Executive Assistant. The finding of this research shows that the establishment of The Governor Regulation Number 69 Year 2014 about the Organization and Working Procedure of the Ombudsman Institution of Yogyakarta Special Region causes the incorporation of 2 institutions, The Regional Ombudsman Institution (LOD) and the Private Ombudsman Institution (LOS), to be a single institution called as the Ombudsman Institution of Yogyakarta Special Region and it was started in 2015. The Ombudsman Institution of Yogyakarta Special Region performance optimization has been seen in its achievements which are in accordance with the applicable regulations. The optimization of socialization task on public right awareness toward public service done by the Ombudsman Institution of Yogyakarta Special Region is considered good and optimum. It can be seen from the programs done in the socialization intensity, socialization quality, and socialization portion compared to other activities. The factors influencing the Ombudsman Institution of Yogyakarta Special Region performance in doing its duties covering the executive human resources factor, facilities and infrastructure and public participation.