The article-based PhD thesis builds on five published articles. It explores how international human rights law regulates the prevention of honour-related violence (also called honour-based violence). The thesis analyses the obligation of the State to not only punish this form of violence but also to undertake other preventive measures. The legal discussion of honour-related violence has so far largely focused on criminalisation. This research brings to the fore the questions of whether States also should try to abolish the underlying causes of honour-related violence, above all strict gender roles and negative gender stereotypes that regard men as superior to women.