Existing literature provides nascent insights into structural arrangements that shape mothers’ experiences of being a sport fan, yet we know little about the social meaning sport fandom holds for mothers. This exploratory study draws on qualitative interviews with 41 mothers from Australia and North America to examine their understandings of sport fandom in the context of their everyday lives and contemporary ideologies about mothering. Findings suggest that sport fandom presents an opportunity for mothers to redefine and transform both fan and mothering practices, thereby challenging popular orthodoxies that fandom becomes less important to women after having children. By foregrounding mothers’ efforts to stay engaged with their fandom, we extend research on the experiences of women sport fans and offer alternatives to normative constructs of fandom.