This article reviews 30 European studies on risk factors for delinquency in adolescent and young adult females. Risk factors are compared with those for (adolescent) male delinquency. Risk factors unique to females are identified, as well as risk factors shared by males and females. Sex differences in risk factors are mainly found for individual and family factors. Females and males differ less in school and peer risk factors. As studies zoom in more on specific domains of risk factors or specific types of delinquent behaviour, more differences emerge between males and females. The limitations of studies examining female delinquency are discussed and future research areas proposed. © The Author(s) 2010.