Domestic violence is the predominant form of violence against women in most countries in Africa and Latin America. Scholars have theorized the adoption of domestic violence laws and policies in both regions. However, policy implementation is understudied and under theorized. Therefore, we compare how international organizations and women's nongovernmental organizations have influenced the implementation of domestic violence policies by police officers in Liberia and Nicaragua. We introduce the concept of the transnational implementation process and describe how international organizations and women's organizations have employed training, institutional and policy restructuring, and monitoring to influence police behavior at the street level. The effects of these strategies have been conditional on the political environment. We identify two patterns of international and domestic influence on street-level implementation: internationally led and domestically supported implementation in Liberia, with domestically led and internationally supported implementation in Nicaragua.