Mothers are key influencers in daughters' decision making about risk behaviors. Much research on parent-child relationships and communication has been conducted among predominantly White, nonimmigrant families. However, parent-child relationships and communications about risk behaviors may significantly differ for Black immigrant families. In particular, transnational behaviors that serve to maintain multiple social identities with attributes from both the receiving and sending nations may shape communication about risky behaviors. The current study evaluated the association between transnational behavior and risk communication mediated by the mother-daughter relationship. A total of 285 first- and second-generation Afro-Caribbean women, most of whom (80%) identified as Black, were recruited via purposeful sampling from Caribbean organizations, Caribbean-focused social media, and Caribbean festivals. Participants (daughters) completed a survey assessing their transnational behavior, perceptions of their relationship with their mother (in terms of interdependence, connectedness, and trust in hierarchy), and perceptions of their mother's communication about sex, alcohol use, and other drug use. Only the relationship between transnational behavior and communication about drugs was fully mediated by connectedness. The relationship between transnational behavior and communication about both alcohol use and other drug use was partially mediated by other facets of the mother-daughter relationship. Findings confirm previous research on parent-child closeness and communication about difficult topics and suggest that such relationships can promote healthy communication in multiple cultures. Children who stay connected to their country of origin stay connected to parents and, therefore, may have greater opportunity to engage in integrated communication about possible risk behaviors. (PsycInfo Database Record (c) 2024 APA, all rights reserved).