This report presents findings about Czech adolescents’ cyberhate experiences and their caregivers’ knowledge. Caregivers refer to the parents, step-parents, and legal guardians of participating adolescents. Cyberhate refers to hateful and biased contents that are expressed online and via information and communication technologies. Our findings are based on data from a representative sample of 3,087 Czech households collected in 2021. The report is intended to provide a comprehensive picture of adolescents’ involvement with cyberhate as the exposed bystanders, as the victims, and as the perpetrators. It also provides information about their caregivers’ cyberhate exposure, and their knowledge of their child’s cyberhate victimisation. The report can serve as a resource for adolescents and caregivers, but also for policymakers, academics, teachers, educators, professionals working with children and families, and for the interested general public.