Background/purpose: The current study tested cross-lagged effects of stress mindset on psychological health and health behaviors across cultures. Methods: Three samples of undergraduate students from Hong Kong (HK), Mainland China (C), and Australia (AU) completed self-report measures of stress mindset (SCMM), depression, anxiety, and stress (DASS-21), sleep quality (PSQI), alcohol use (AUDIT-C), and physical activity online at baseline (T1) and at a 4-week follow-up (T2). Maximum likelihood cross-lagged panel models for the psychological health and health behaviour outcomes were estimated using lavaan in R. Results: We observed a significant cross-lagged effect of T1 stress mindset on T2 depression, T2 anxiety, and T2 stress in the sample from China. However, these effects were not observed in samples from Hong Kong or Australia. No cross-lagged effects were observed for any of the health behaviors. No T1 psychological health factor or health behavior predicted T2 stress mindset and all constructs were highly stable between T1 and T2. Conclusions and implications: Findings provide preliminary support for the temporal sequence of relationships between stress mindset and psychological health in China. However, high stability of the outcomes over the study period suggests that experimental research is needed to further examine how stress mindset impacts stress-related outcomes.