This Research Summary demonstrates that female sex offending, although a serious issue, makes up a very small percentage of all sex offences. Correctional services data show a prevalence rate of just under 5% (Cortoni & Hanson, 2005). This paper explores prevalence statistics as well as offender and offence characteristics from data collected about female sex offenders. Data limitations with this population include very small samples, usually limited to custodial populations. This summary outlines the impacts on victims of sex offences by women, as well as issues related to disclosing the abuse. The available literature on prevention as well as treatment options is also explored.