The relative lack of attention to fathers' effects on children's achievement is even more apparent when examining fathering among low-income racial-ethnic minorities. We examined relations of fathering qualities when children were 2-3 years old with subsequent reading and mathematics achievement in kindergarten in a sample of low-income African American (n = 119) and primarily Mexican-origin Latino children (n = 193) from multiple neighborhood areas of a large city in the southwestern United States. Measures of parenting qualities were based on qualitative ratings of videotaped observations of father-child and mother-child interactions collected in the home during semistructured play activities. Mathematics and reading achievement scores were based on administration of the Woodcock-Johnson Revised (Woodcock & Muñoz-Sandoval, 1993) or the Batería Woodcock-Muñoz (Woodcock & Munoz-Sandoval, 1996), as appropriate depending upon the child's language. A structural equations model in which kindergarten mathematics and reading achievement were regressed on early childhood fathering displayed good model fit, χ2(72) = 131.30, p < .001, comparative fit index = .954, root mean square error of approximation = .051, standardized root mean square residual = .079. Results indicated that sensitive support from African American and Latino resident fathers was associated with their children's mathematics achievement even after controlling for mothers' sensitive support, but fathering quality was not associated with reading achievement. The implications of these findings for the study of fathering in racial-ethnic minority populations as well as for the development of early preventive interventions to support academic achievement are discussed. (PsycINFO Database Record (c) 2020 APA, all rights reserved).