William J. Barber II is an American Protestant minister, social activist, professor in the Practice of Public Theology and Public Policy and founding director of the Center for Public Theology & Public Policy at Yale Divinity School. He is the president and senior lecturer at Repairers of the Breach and co-chair of the Poor People's Campaign: A National Call for a Moral Revival. He also serves as a member of the national board of the National Association for the Advancement of Colored People (NAACP) and is the chair of its legislative political action committee. From 2006 to 2017, Barber served as president of the NAACP's North Carolina state chapter, the largest in the Southern United States and the second-largest in the United States. He pastored Greenleaf Christian Church in Goldsboro, North Carolina, from 1993 to 2023.