This umbrella review combines the evidence from existing literature reviews on cyberbullying prevention and treatment interventions, describes their characteristics, summarises the findings, and assesses their methodological quality. A systematic search of four databases and Google Scholar was applied to locate peer-reviewed, national and international literature reviews on cyberbullying interventions, published between 2000 and 2019, in the English language. Half of the included reviews were narrative reviews, and while these did provide rich contextual information about cyberbullying interventions, the 11-point AMSTAR checklist was utilised to assess the quality of only systematic reviews included in our summary.