--- - |2+ Objective This study disentangles the known correlates of conspiracy beliefs—such as the general predisposition toward conspiratorial thinking, authoritarianism, and partisan and ideological predispositions—in order to better understand the psychological antecedents of such beliefs and answer the question: Who are conspiracy theorists? Methods We use classification and regression tree models to explain individual beliefs in specific conspiracy theories, employing a large set of known correlates of conspiratorial thinking. Results Depending on the characteristics of the conspiracy theory employed on the survey, we find that political orientations and conspiratorial thinking provide the most analytical leverage in predicting individual conspiracy beliefs. Furthermore, paranormal beliefs were more predictive than previous literature suggests, while psychological biases demonstrated very limited predictive utility. Conclusions The psychological antecedents of conspiracy beliefs used to explain those beliefs vary considerably by the stimuli or events at the center of a given conspiracy theory. Therefore, disproportionately favoring one type of conspiracy theory on one's survey may result in inferences about conspiracy theorists that do not translate across studies. Furthermore, though we are not yet capable of fully determining who conspiracy theorists are, conspiratorial thinking, paranormal beliefs, and political orientations are more predictive of particular conspiracy beliefs than other attitudes, predispositions, and orientations. - 'Social Science Quarterly, Volume 100, Issue 6, Page 2017-2032, October 2019. '