This study explores knowledge and attitudes about menstruation among adolescent boys across India, in order to gauge their potential to support young women. The findings show some optimism in these young men becoming advocates and moving forward the Menstrual Hygiene Management (MHM) agenda. The boys were keen for knowledge about menstruation, searching information out despite societal norms, they were also largely sympathetic to menstruating sisters and classmates and understanding of the issues surrounding the need for good MHM.