The World Health Organization and United Nations Children's Fund's Baby-Friendly Hospital Initiative is aimed at the global promotion, protection and support of breastfeeding. In this study, we compared breastfeeding-related information received, knowledge and behaviours among postpartum women in Baby-Friendly Hospital Initiative accredited and non-accredited hospitals. We selected 10 hospitals: 9 non-accredited hospitals in the Campania region in southern Italy and one accredited hospital in the Piedmont region in northern Italy. In total, 786 women (580 (73.8%) in Campania and 206 (26.2%) in Piedmont) in the hospitals' maternity wards completed a questionnaire comprising 5 sections within 24 to 72hours after giving birth. The questionnaire investigated breastfeeding activities in the days immediately following childbirth, as well as the information provided by health personnel, knowledge about breastfeeding before and during hospitalisation, and participation in antenatal classes. To evaluate the comparison between the 2 regions, we performed at first a bivariate analysis and then a multinomial and a multivariate logistic regression. Compared with Piedmont, in Campania hospitals there was a rate of breastfeeding of 44.3% vs 89.3%, a skin-to-skin contact between mother and child of 74.5% vs 90.7% and first milk feed within 2hours of 15.0% vs 87.2%. The Campania group had fewer problems with child latching. The Campania group reported receiving less information about breastfeeding in general compared with the Piedmont group. In general, both groups showed good basic knowledge about different aspects of breastfeeding. In both regions, about 90% reported that the information received during the antenatal classes simplified the breastfeeding experience. Our study confirms the importance of systematic promotion of breastfeeding and subsequent delivery of adequate support to maternity departments, in accordance with international guidelines.