This research note is the first to systematically examine the naming and shaming of nonstate armed groups (NSAGs). While previous research has focused on naming and shaming that targets states, we leverage novel data to show that the practice extends to NSAGs, accounting for almost half of all admonishments made at the United Nations Security Council (UNSC) from 1995 to 2016. We develop and test two explanatory theories: one suggesting that partnerships between states drive states to name and shame NSAGs, and another positing that states condemn NSAGs to support the multilateral system and signal their commitment to global norms protecting civilians from violence. We argue that states employ the diplomatic tool carefully and selectively, and as a consequence, the UNSC’s five permanent members (P5) and the ten elected members (E10), name and shame for different purposes. Our findings indicate that strategic partnerships between UNSC member states and governments engaged in conflicts with NSAGs influence the P5’s decisions to name and shame NSAGs. In contrast, the E10 are more likely to publicly condemn NSAGs that deliberately target civilians, suggesting that adherence to global norms better explains their behavior. However, the E10’s naming and shaming may not be aimed at enforcing compliance from NSAGs, but rather at showcasing to domestic and international audiences their own commitment to these norms. Our study marks the opening of a new research agenda on the naming and shaming of NSAGs.