This paper examines the potential reasonings behind the recruitment of women in Islamist Extremist groups and addresses the large-scale recruitment of women from western countries to join terrorist organisations such as ISIS. Women are becoming not only part of Islamic political groups, but also terrorist groups and are also actively fulfilling violent roles within the groups by playing a larger role in offensive combat and suicide bombings. The paper concludes by considering the importance of women becoming the cornerstone of anti-extremist efforts, as well as the importance of recognising the gender gap throughout the Muslim world.