The city of Singkawang in the West Kalimantan Province of Indonesia is one of Indonesia's regions, which has a significant level of ethnic heterogeneity. It is very vulnerable to various conflicts. However, in 2018, Singkawang City was designated the most tolerant city in Indonesia through an assessment from the Setara Institute. For this reason, this study was conducted to analyze the political form of harmony and social capital as a Tolerant City in Singkawang City. The method used in this study is descriptive qualitative with literature study as a method of data collection. Data analysis was carried out in stages, namely collecting data, summarizing the data, and making conclusions. This study finds that the form of political harmony is the cooperation of state actors, the Forum for Religious Harmony and intense society, communicative interactions, and relationships that complement and provide mutual reinforcement. The people of Singkawang City as the main actors have also seen and understood having a diverse perspective not to discriminate and intolerance. Besides, it was also found a form of social capital created from the relationship between ethnic communities in Singkawang City, namely in general norms and group characteristics.

Keywords: Politics of Harmony; Social Capital; Tolerant City