In March 2019, I had the pleasure of giving a talk at Peter Green College at the University of British Columbia that I called “The Politics and Possibilities of Girl-led and Youth-led Arts-based Activism to Address Gender Violence.” I wanted to highlight in particular the activist work of numerous groups of Indigenous girls and young women in a current project and the youth AIDS activist work of the Fire and Hope project in South Africa but I also wanted to place this work in the context of girls’ activism and youth activism more broadly. To do this I started out with a short activity called “Know your Girl Activist” during which I showed PowerPoint photos of some key girl and young women activists of the last few years, and asked the audience if they could identify them. The activists included two Nobel Prize Peace Prize winners, Malala Yousafzai (2014) and Nadia Murad (2018) along with Autumn Pelletier, the young Indigenous woman from Northern Ontario, Canada, well known for her work on water activism, and, of course, Greta Thunberg, now a household name but then, in 2019, already well known for her work on climate change activism. To my surprise only some of these activists were recognized, so, during the Q and A session, when I was asked if there is a history of girls as activists I could see that this question indicated clearly the urgent need for this special issue of Girlhood Studies which was only just in process then. Now, thanks to the dedication of the two guest editors of this special issue, Catherine Vanner and Anuradha Dugal and the wide range of superb contributors, I can point confidently to girls’ activism as a burgeoning area of study in contemporary feminism rooted in feminist history.