This study evaluates the existing breastfeeding practices among rural and urban populations in Bangladesh. It also examines the role of breastfeeding in birth spacing. For the purpose, mothers, having at least two children, were interviewed. To delineate birth spacing, age differences between the last and second last children's birth have been accounted. The difference of differential determinants is analyzed through multivariate regression analysis in the study to grasp the effect of particular determinants of breastfeeding in birth spacing.