Some women who breastfeed will experience complex ongoing difficulties, such as breastfeeding aversion response (BAR). This recently named breastfeeding challenge is defined as feelings of aversion while breastfeeding for the entire time that the child is latched. This study provides the first prevalence data for the experience of BAR in Australian breastfeeding women. A national online survey investigated the breastfeeding experience of Australian women including data on (1) participant demographics, (2) breastfeeding experience with up to four children, (3) breastfeeding challenges and prevalence of BAR, and (4) the value of available breastfeeding support. This study found that of the Australian breastfeeding women who participated (n = 5511), just over one in five self‐identified as having experienced a BAR (n = 1227, 22.6%). Most reported experiencing some breastfeeding challenges, with only 4.5% (n = 247) having had no breastfeeding complications. Importantly, despite these difficulties, 86.9% of the total women in this study rated their overall breastfeeding experience as good (n = 2052, 37.6%), or very good (n = 2690, 49.3%), and 82.5% of those who experience BAR as good (n = 471, 38.7%) or very good (n = 533, 43.8%). BAR reporting was decreased in higher education and income groups. Women who are breastfeeding for the first time are more likely to encounter difficulties with breastfeeding such as BAR. Complications with breastfeeding are pervasive, but women who can overcome breastfeeding issues often report a positive overall breastfeeding experience.