In order to investigate the potential for adoption of Public Private Partnerships (PPPs) in road infrastructure in Vietnam, this study aims to identify, categorize and analyze various critical success factors (CSFs) for road projects that are procured through PPPs. The study follows a systematic research approach which includes literature reviews, case studies, and questionnaire survey as well as in-depth interviews with PPP experts and stakeholders in Vietnam regarding CSFs for PPPs. CSF groups derived from the published literature and a set of semi-structured interviews comprise: Prevailing Environment, Project Participants, Project Implementability, Effective Procurement, Sound Financial Package and Government Support. A series of questionnaire survey packages are used to collect information from relevant people in the public and private sector in the road infrastructure industry in Vietnam. The responses are analyzed using statistical packages and the Analytical Hierarchy Process (AHP) approach. Conclusions and recommendations are then drawn on the basis of these findings. The research is potentially of value to future PPP projects in the field of road infrastructure investment in Vietnam and other developing countries.