During 1966 five patients who had congenital partial lower facial paresis and heart defects were seen at the Sutter Memorial Hospital. The author had not previously seen these two lesions associated. The five patients reported were from a total of 44 infants with congenital heart defects who were seen in 1966 and examined during the first 12 weeks of life—an incidence of 11%. During 1966 the author observed no instances of facial paresis in a group of 30 infants (also examined during the first 12 weeks of life) who had functional murmurs. The partial facial paralysis was unilateral and, except for the side involved and slight differences in severity, was exactly identical in all cases and involved only the lower-lip depressors (the mentalis and the quadratus labii inferior).