Ronald James Sider is a Canadian-born American theologian and social activist. He is often identified by others with the Christian left even if he personally disclaims any political inclination. He is the founder of Evangelicals for Social Action, a think-tank which seeks to develop biblical solutions to social and economic problems. He is a founding board member of the National Religious Partnership for the Environment. He is also the Distinguished Professor of Theology, Holistic Ministry and Public Policy at Palmer Theological Seminary in Philadelphia, Pennsylvania.
