The aim of this study was to simultaneously investigate a range of individual predictors of beliefs in COVID-19 conspiracy theories that account for socio-demographic characteristics (age, gender, education, economic standard, the importance of religion and political self-identification), distinctive motivational orientations (social dominance and authoritarianism), relevant social attitudes (sense of political powerlessness and trust in science and scientists) and perceived personal risk (perceived risk for self and family members, concern of being infected and expected influence of pandemic on one’s own economic standard). Data collection was done as a part of a longitudinal study in progress using the online panel of respondents who were compensated for their time. The sample was a national probabilistic quota sample that was two-way stratified: by region and by settlement size. The structure of the total sample corresponded to the structure of the targeted population according to the valid census, including the distribution of age, gender and, with corrections, education. Participants were 1060 adults recruited from the general population of Croatia.