Although country-level corruption predicts conspiracy beliefs, it is unclear whether the individual-level perception of corruption is also a predictor of conspiracy beliefs and whether this relationship extends to other epistemically suspect beliefs, like paranormal and pseudoscience beliefs. Furthermore, the comparative robustness of perceived corruption's association with beliefs relative to other factors is not well understood. In this study (Ntotal = 5,400; Turkish and British participants), we controlled for demographic factors (age, sex, education, SES), socio-political attitudes (ideology, religiosity, right-wing authoritarianism, social dominance orientation), personality traits (Big Five and Dark Triad), cognitive sophistication (cognitive reflection and science literacy), and generalized social trust and found that perceived corruption is still a robust associate of conspiracy, paranormal, and pseudoscience beliefs, even after accounting for all these factors. The results indicate that despite numerous identified variables, the individual-level perception of corruption, a culture-specific factor, remains a significant predictor, highlighting its importance for future research.