Since the January 2021 attack on the US Capitol, the influence of White Christian nationalism (WCN) has become even more pronounced and concerning. Adult educators and the public need a better understanding of whether and how WCN can be unlearned, and the roles ordinary citizens and adult educators can play in this process. After describing WCN and its reach in the United States, the article draws on three bodies of literature to consider how both the most committed proponents and sideline supporters might turn from WCN toward new beliefs and identities. These literatures are: (1) deradicalization from extremist groups and movements (e.g., terrorism, cults, gangs); (2) unlearning; and (3) personal accounts of leaving and discarding beliefs rooted in White supremacy, Christian nationalism, or White evangelicalism. Together, these sources offer useful insights into the conditions that help people change beliefs associated with extremist movements such as WCN.