This study explores unethical pro-organizational behavior (UPB) within the context of varying cultural values. We explore how societal norms and group allegiances, shaped by cultural underpinnings, influence the propensity of individuals to engage in UPB. Central to our investigation are two societal values: group well-being (collectivism) and hierarchical orientation. Using a meta-analytic approach with a sample size of 43,648 across 166 studies, we examine the moderating role of these cultural dimensions on the propensity to prioritize subgroup interests over societal expectations. Our findings show the complexities associated with individual ethical frameworks and their societal environment. In cultures with a strong emphasis on group well-being, we observe a heightened propensity for individuals to prioritize organizational interests, but also find that in these same environments, the negative relationship between societal expectation adherence and UPB is exacerbated, meaning individuals that give higher self-meaning to their adherence to morals are even less likely to commit UPB. Additionally, in hierarchical societies, we generally find support for a de-emphasis of societal norms evidenced by a strengthening of both the relationship between organizational bonds and UPB, as well as the relationship between moral disengagement and UPB. We explore and offer potential explanations for some of the conflicting findings in this study. This research contributes to organizational ethics literature by underscoring the pivotal role of cultural context in shaping individual ethical decision-making, offering valuable insights for multinational organizations in understanding and managing ethical behaviors across diverse cultural landscapes.