Research shows that cyberbullying is a significant issue encountered online by children in Ireland. Researchers and educators recognise the importance of the role of peer bystanders in bullying situations, but more research is needed in this regard within an Irish context. Moreover, there appears to be a general lack of literature on the role of bystanders in cyberbullying situations. Therefore, this research study commissioned by Webwise was conducted by DCU Anti-Bullying Centre and aims to explore online bystander behaviour among young people in Ireland. A sample consisting of 212 students aged 13 to 17 years completed an online survey including questions regarding participants use of the internet and digital devices and bystander behaviour.