Violence against women, including intimate partner violence (IPV) and stalking, is a serious issue in Korea. Studies have found that most stalking perpetrators are current or former intimate partners, and there is a significant association between stalking behaviors and IPV. Using data from the Violence Against Women, Focused on Intimate Partner Violence (VAW-IPV) study, collected by the Korean Institute of Criminology (KIC), this study aims to identify patterns of IPV perpetration and examine how those patterns predict post-breakup stalking among 847 Korean men who were in a romantic relationship, but are not currently in that relationship. In addition, as various factors might predict different IPV patterns, this study examines these nuanced patterns. We identified three distinct IPV perpetration patterns among Korean men, and found that those patterns predict post-breakup stalking differently. We also found that there were distinct factors such as self-control and child abuse history that differentiated each subgroup. Based on the findings of this study, we suggest policy implications, including developing educational programs and risk assessment tools that can prevent further perpetration of IPV and stalking behaviors among Korean men.