The purpose of this paper is to investigate the relationship between public leadership and open government information to public service’s performance in Indonesia.

The object of the study is Jakarta Capital City Government, which is divided into five areas of administrative city and one administrative district, samples of 178 respondents are obtained. The analysis tools use the moderator regression analysis. The assumption of linearity is not met, and the alternative tools use nonparametric regression. This research uses the nonparametric moderator regression analysis: Truncated Spline.

The role of public leader has a significant and positive effect on public service performance, on different levels of role of public leader, moderated by the implementation of open government information. In the high level of open government information, it has a higher slope than the low level of open government information, in the range of moderate to high-level leader of public leaders. On the other hand, in the low level of open government information, it has a higher slope than the high level of open government information, in the range of moderate to high-level leader of public leaders. This shows that the higher implementation of open government information, the stronger the influence of role of public leader on public service performance.

No previous study has studied comprehensively the Moderation Effect of Open Government Information Policy in relationship between public leadership to public service performance, especially in Indonesia.