The purpose of this research was to answer the question regarding whether perceived social justice or interpersonal trust is the stronger predictors of political trust. The research method was correlational study, using accidental sampling method, with university students above 19 years old as the research respondents. We successfully gathered 1161 respondent. Perceived social justice was measured by Procedural and Distributive Justice Scale (Blader & Tyler, 2003), interpersonal trust was measured by Propensity to Trust Scale (Evans & Revelle, 2008), and political trust was measured by Citizen Trust in Government Organizations Scale (Grimmelikhuijsen & Knies, 2015). Results show that political trust was positively correlated with perceived social justice (r = 0.714, n = 1161, p>0.01, one-tailed) and interpersonal trust (r = 0.112, n = 1161, p>0.01, one tailed). Regression analysis showed that perceived social justice was the better predictor (B = 0.711) rather than interpersonal trust (8 = 0.114) towards political trust.