Men's relationships to gender-based violence (GBV) have long been an area of sociological inquiry, but until recently men have primarily been framed as perpetrators of violence against women. More recently, research on men and GBV has broadened to include studying men as victims/survivors, as investigators and law enforcement officers, as passive or active bystanders, and as allies in working to address this social problem. We review this research in an effort to bridge these divergent bodies of work; we identify methodological trends and gaps in existing research, make recommendations for improved theoretical and methodological robustness, and suggest that research perspectives on men and GBV have shifted over time as wider understandings of gender and masculinities become more hopeful and more inclusive. While we see optimism and promise in new directions of GBV research, we urge ongoing research to retain the wisdoms and critical perspectives that marked the beginnings of GBV inquiry. K E Y W O R D S domestic violence, gender-based violence, men and masculinities, men as allies, men as victims, rape, sexual violence 1 | INTRODUCTION Over the last half-century, research on gender-based violence (GBV) has expanded dramatically as scholars work to better understand the phenomena and thereby contribute to addressing GBV more effectively. In this article, we use GBV to include primarily physical sexual violence (i.e., rape, sexual assault, and so forth), intimate partner violence, and sexual coercion, but also other forms of interpersonal physical and non-physical violence imposed on