Research on cyberbullying is still in its relative infancy compared to research on other forms of social behavior. However, findings across contexts suggest that cyberbullying is a phenomenon that is linked with many negative outcomes for individuals and organizations. In the current chapter, we provide a summary of the key themes that emerged in the preceding chapters related to cyberbullying in schools, the workplace, and in romantic relationships. We also discuss the similarities and differences in the research findings across contexts, age groups, and cultures. Then, we outline a series of future research directions related to cyberbullying in schools, in the workplace, and in romantic relationships. We also provide an overview of methodological shortcomings of existing research and discuss some possible ways to strengthen study designs and data collection tools to improve the quality of future research. Finally, we highlight the need for more cross-contextual, longitudinal, and cross-cultural research on cyberbullying to help better understand the many lenses and perspectives of electronic mistreatment.