Although family social support has been linked to numerous psychological, behavioral, and academic outcomes for Black adolescents, little research investigates the family support networks of these youths. Using nationally representative data from the National Survey of American Life Adolescent Supplement (NSAL-A), this study examines the family social support exchanges of African American and Black Caribbean adolescents. We focus specifically on the frequency of instrumental and emotional support provided by and offered to adolescents and the sociodemographic and family correlates of this support. Findings indicate that both African American and Black Caribbean adolescents provide and receive a substantial amount of support from family, though there is significant variation by age, gender, income, ethnicity, region, and country of origin within and across these populations. Further, subjective family closeness was related to both the receipt and provision of support. Overall, findings affirm the importance of investigating adolescent family support networks, as well as examining ethnic differences within the U.S. Black population.