Introduction: Children typically have a diminished capacity to comprehend the COVID-19 epidemic. To convey information about COVID-19 to elementary school students (ESS), it takes educational comic media that children like because it is “fun,” “ informative, “ and well-understood. However, the effectiveness of this intervention has yet to be thoroughly investigated. This study aimed to measure the knowledge of ESS after studying COVID-19 with comics. Methods: A pre-post quasi-experimental design with a control group was used in this study. There were 66 ESS recruited on purpose. Intervention (n = 33) and control (n = 33) groups were formed. The intervention group received COVID-19 education using comic book media. Who Will Win the Fight Between Kids, Vaayu, and Corona?, a COVID-19 Awareness Comic, was translated into Indonesian. The education was given twice every two weeks, while the standard school intervention was given to the control group. To collect data, researchers designed a questionnaire based on a literature study. The questionnaire was valid and reliable, with a Cronbach alpha of 0.71, and the results were analysed using the independent sample t-test. Results: There was a substantial difference in Knowledge towards COVID-19 ratings between the control and intervention groups (p = 0.001). The mean Knowledge towards COVID-19 score of the intervention group was higher than that of the control group (M=4.33 vs M=1.63). Knowledge about COVID-19 differed significantly between the intervention and control groups (p = 0.001). Conclusion: Comic books are effective in increasing knowledge about COVID-19 in ESS.