Supernatural beliefs are ubiquitous around the world, and there is mounting evidence that these beliefs partly rely on intuitive, cross-culturally recurrent cognitive processes. Specifically, past research has focused on humans’ intuitive tendency to perceive minds and reason about mental states as some of the cognitive foundations of belief in a personified God — an agentic, morally concerned supernatural entity. However, many widely-endorsed supernatural entities lack the agentic qualities that are prototypical of gods, raising interesting theoretical questions about the cognitive predictors of putatively non-theistic supernatural beliefs. In two studies and four high-powered samples, we investigated belief in karma—a culturally widespread but ostensibly non-agentic entity that reflects belief in ethical causation across reincarnations. Drawing on religiously diverse samples, we used path analyses to investigate how individual differences in intuitive thinking styles, mentalizing, mind-body dualism, and teleological thinking predict both belief in karma and belief in God. In Study 1 (N = 2006), a similar pattern of cognitive predictors was found among Canadian and mostly-Hindu Indian participants (Study 1), despite differences in the cultural-prevalence and religious histories of karma in these two cultures. Study 2 (N = 1752) provided a preregistered conceptual replication of these findings in a general American (mostly Christian) sample and a Singaporean Buddhist sample, and demonstrated that these cognitive variables predicted belief in karma and God above and beyond the variability explained by cultural learning. These results support an independent role for both culture and cognition in supporting supernatural beliefs.