Arguably, no subject has captured more attention in the study of American religion in recent years than “Christian nationalism”—a political theology that seeks a privileged place for Christianity in American public life. Social scientific inquiries into the causes and consequences of Christian nationalism have yielded much fruit in a relatively short period of time. Nevertheless, the literature tends to treat Christian nationalism as if it were a monolithic category, with all “Christian nationalists” being motivated by the same beliefs. In reality, Christian nationalists, although presumably seeking the same goal—namely the establishment of a Christian nation—are a diverse lot, motivated by very different, in some cases mutually exclusive, belief systems. This article attempts to remedy this oversight by exploring the divergent beliefs and theologies undergirding different forms of American Christian nationalism. Specifically, it delineates three main forms of Christian nationalism present in American public life: charismatic dominionism, Calvinist nationalism, and Catholic integralism. It explores what differentiates these different Christian nationalist movements and what they mean by and how they work together to bring about a Christian America.