This dissertation aims to examine the relationship between interorganizational collaboration and the implementation of urban greening policy. Specifically, it discusses bonding and bridging relationships that explain a successful interorganizational collaboration, and to what extent these factors explain the perception of success in the implementation of public programs. The effects of risks of collaboration on the implementation of urban greening policy are also studied. To frame the analysis, this dissertation uses Feiock's institutional collective action (ICA) framework, which aims to understand successful interorganizational collaboration and policy implementation across sectors. The collection of data was carried out in Riyadh City in Saudi Arabia, which is located in the center of Saudi Arabia. In this study, the unit of analysis is the networks of relationships among organizations that work with the Royal Commission for Riyadh City (RCRC). The data were obtained from 44 organizations collaborating to implement urban greening projects in Riyadh City and were collected over 17 days from June 15, 2019 to July 2, 2019. The sampling technique used in this study was snowball sampling. The main statistical methods employed for hypothesis examination were social network analysis (SNA) and ordinary least squares (OLS). The key empirical results indicated that there were …