Health communication is essential in preventing gender-based violence because it raises awareness, challenges harmful attitudes and behaviours, and provides people with the information and resources they need to prevent violence. There are principles and roles of health communication that can be used with a variety of communication techniques to develop health communication tools able to create a culture that values and promotes gender equality and reduces or prevents the prevalence of gender-based violence. This chapter focuses on the principles and roles of health communication that can inform effective gender-based violence preventionGender-based violence prevention. The chapter starts by highlighting the key effective principles of health communication in gender-based violence prevention and ends by exploring the role of health communication in the prevention of gender-based violence.