The health crisis caused by the appearance of the COVID-19 virus in 2019 spread throughout the world. In March 2020, the global COVID-19 crisis was officially marked by a pandemic, and scientists and experts did not know the answers to a number of questions asked by the frightened public, which led to an increase in false and inaccurate information in the media and the emergence of conspiracy theories. The COVID-19 pandemic is a public health crisis and as such a fertile ground for conspiracy theories. The World Health Organization (WHO) has revealed that there is a “massive infodemia” in the media of false and accurate information about the new coronavirus. Theories about the etiology of the virus continued and several conspiracy theories crystallized. Conspiracy theories are an increasingly present and increasingly popular form of pseudo-history, thanks to new media as well. The role of the media and the way they transmit and communicate information have become more important than ever before, and thus their responsibility that such a situation carries with it. The paper will analyze the discourse of media mediation on conspiracy theories related to the COVID-19 pandemic in the Republic of Croatia on selected Croatian online media and, based on the obtained data, determine their method of reporting on the pandemic.