Literature and research examining father involvement has focused primarily on outcomes associated with the well-being and development of children. Receiving limited attention in this literature has been the examination of the contextual factors associated with fathers and how these factors shape fathers' involvement with their young children. Addressing this limitation, this study focuses on the intra- and interdependent networks non-marital fathers maintain and utilize in fulfilling their parental responsibilities of father involvement. Results of the regression models indicate that non-marital fathers' relationship with their former spouse or partner and involvement with informal networks is positively associated with their involvement with young children. Policy and practice implications are discussed.