Social Media is a new media of information flow gateway that can be accessed by the public, easily and freely. Social Media is an interactive information technology which not only can netizens access information, but they can also make news (information, comments, etc.) and share it on the internet. Easy access to information has caused ideological effects on society. This research aims to examine the ideological effects of the myths about COVID-19 on social media. The data collection was done through (...) observation and distributing questionnaires online on social media. The data sources were from WhatsApp and Coronavirus cases reported online Indonesia. Researchers used Barthes' mythological theory to answer the research objectives. The results of this research indicated that the spread of myths related to COVID-19 by netizens on social media had caused ideological effects on society, for example, the public refused the coronavirus victims to be buried in public burial because of the corpse considered to infect the residents. This research contributes to the media effects theory development, which can be a policy for the government in fighting against Coronavirus, and netizens who use parrhesia on social media which can contain untrue myths. (shrink)