The study investigates key performance indicators (KPIs) that could improve performance of public-private partnership (PPP) projects in Nigeria. The study objectives include a comparison of stakeholders’ perception on KPIs and to investigate if significant difference exists between stakeholders’ perceptions on most KPIs. A structured questionnaire was used to collect information from various respondents who were recently involved in PPP projects. Random sampling technique was used to select forty-five (45) respondents out of which thirtyone (31) responses were used for the data analysis. The results indicate that top KPIs for performance improvement are levels of design complexity and technological advancement, and return on investment. Stakeholders agree on most of the rankings of the KPIs. The general perception of stakeholders was similar on most KPIs except for a few divergent opinions. The study findings have an implication for policy and decision making such that stakeholders could pay special attention to the KPIs identified, that could improve construction project performance. Finally the study recommends further research to explore KPIs for other procurement options.