The study aims to measure determinants of mobilization of Islamic finance for PPP projects in Indonesia. The study employs whole cycle of PPPs as variables namely input, process or activities, output, and outcome. Each variable consists of several selected indicators. The study applies a questionnaire and utilizes descriptive statistics and quantitative analyses. The questionnaire aims to analyse the relationship relating the selected variables and the indicators in the conceptual framework. The study covers the feedbacks from relevant stakeholder’s namely Islamic financial institutions, government entities and relevant ministries, and private sectors or equity investors. The study selects 108 respondents. The study observes that the findings confirm the Hypothesis, i.e. Input has a positive effect on the Process; Process has a positive effect on the Output, and Output has a positive effect on the Outcome. It recommends the valid indicators as the key determinants in this regard.