The social support networks of 25 Puerto Rican single mothers of young children with disabilities were examined and compared with current models of family support for children with disabilities. This study was designed to assess the support systems of Latino single mothers in light of dominant models of family support. The Family Support Scale, the ECOMAP, and responses to open-ended questions were employed to describe the characteristics of Puerto Rican single mothers’ support systems. Study findings suggest that members of the children’s immediate and extended kinship system, including non-blood relatives (e.g., madrinas), play a strong role in the support network of the mothers interviewed. Implications for early childhood professionals who work with Latino parents of children with disabilities are examined.