We compared factors mediating motherhood experiences among Black nursing mothers living with HIV in two North American cities to one African city. Motherhood was measured with the Being a Mother Scale, and we compared their predictors between the two continents using difference in difference estimation within hierarchical linear modeling. Cultural beliefs congruent with infant feeding guidelines and social support had significant positive but differing effects on motherhood in the two continents. Perceived stress had significant negative impact on motherhood in the two continents. Due considerations to sociocultural contexts in policy development, HIV interventions and education of health care providers were recommended.