Cambodia is one of the poorest and most aid- dependent countries in Southeast Asia. Historically NGOs have operated in Cambodia since the collapse of the Khmer Rouge regime in 1979. Since the Paris Peace Accord Agreement, signed by the Cambodian leaders in 1991, the number of NGOs has grown rapidly and played a pivotal role in delivering public services and advocacy. In an effort to improve efficiencies and effectiveness aid delivery mechanisms have become extraordinarily complex and cumbersome. They require all parties to have strong coordination efforts within their individual groups and amongst broader stakeholders. This thesis analyses the effectiveness of NGO coordination in Cambodia. It is based on recently completed in-country research involving participant observation and a series of semi-structured interviews. The findings indicate that the NGO coordination efforts have encountered a series of challenges. These include cultural, political and institutional challenges and poor NGO coordination between national and provincial levels. There are, however, some opportunities for improvement through creating an environment that enables policy dialogue with the government.