This chapter discusses the principles of Mixed methods research (MMR) and why it might be useful to violence scholars and provides examples of how MMR has been applied in studies of violence across disciplines. It describes how mixed methods can best be utilized to achieve the aims of a research project and improve the validity of findings, as well as their potential interest for other scholars and for policy makers. As MMR has become more common, scholars have developed a variety of typologies through which to classify different MMR designs or styles of research presentation. Classification systems for the implementation of MMR focus on sequence and emphasis in how different methods interact. Scholars studying violence have used MMR approaches to examine the dynamics and effects of violence at all different scales, ranging from interpersonal violence to collective social violence in riots or repression, to civil war to interstate war to mass violence or genocide.