The authors examined how witnessing community violence influenced social support networks and how these networks were associated with male-to-female intimate partner violence (IPV) in ethnically diverse male college students. The authors assessed whether male social support members themselves had perpetrated IPV (male network violence) and whether female social support members had been victimized by intimates (female network victimization). The results indicated an association between community violence and male network violence; both factors were significantly associated with higher levels of IPV. Furthermore, the relationship between community violence and IPV was partially mediated by male network violence. Additionally, the results indicated a moderated relationship such that male participants who reported the highest levels of exposure to community violence and male network violence were at highest risk for IPV. However, this relationship did not hold across all ethnicities and races. The findings suggest that the mechanisms associating community violence, networks, and IPV are multifaceted and differ across ethnicity and race. (Contains 1 table and 3 figures.)