In this case report, we detail the first known pediatric case of COVID-19-related myocarditis and provide a review of the literature. The majority of patients with coronavirus disease 2019 (COVID-19) display pulmonary disease; however, a significant portion of patients have cardiac injury as well, with a high incidence of myocarditis documented in the adult population. Pediatric disease from COVID-19 has been relatively rare, and no cases of virus-related cardiac disease have been published. We present a case of an adolescent girl with fulminant myocarditis with complete heart block, elevated troponin I levels, and severely depressed systolic function in the setting of COVID-19 infection.