Gary Barker, PhD, is a leading global voice in engaging men and boys in advancing gender equality and positive masculinities. He is the CEO and co-founder of Promundo-US, which has worked more than 10 years in nearly 40 countries. He is also co-founder of Instituto Promundo in Brazil, which began work on healthy masculinities and male allyship more than 20 years ago. Gary is co-founder of MenCare, a global campaign working in more than 50 countries to promote men’s involvement as caregivers, and co-founder of MenEngage, a global alliance of more than 700 NGOs. He co-created and leads the International Men and Gender Equality Survey (IMAGES), the largest-ever survey of men’s attitudes and behaviors related to violence, fatherhood, and gender equality. He is a co-author of the 2015, 2017, 2019 and 2021 State of the World’s Fathers reports. He has advised the UN, the World Bank, numerous national governments, and key international foundations and corporations on strategies to engage men and boys in promoting gender equality. In 2017 he was named by Apolitical as one of the 20 most influential people in gender policy around the world. He is an Ashoka Fellow and received the Voices of Solidarity Award from Vital Voices for his work to engage men for gender equality. He holds a PhD in Developmental Psychology and a Research Affiliate position at the Center for Social Sciences, University of Coimbra, Portugal.