The Princeton Christian Fellowship (PCF), formerly the Princeton Evangelical Fellowship (PEF), is a nondenominational Christian ministry at Princeton University whose purpose is "to help undergraduate and graduate students ... grow as believers and followers of Jesus Christ ... [and] to let the rest of the University community know the full message of Christianity so that others can come to believe and have faith in Jesus Christ." Founded in 1931 by Dr. Donald B. Fullerton, a member of the Princeton University Class of 1913, the PCF is one of the oldest campus ministries of its type, predating the founding of Cru and Intervarsity by a decade or more. PCF is one of the largest student organizations at Princeton University, and is currently led by the Rev. Chris Sallade, a member of the Princeton Class of 1994.

Donald B. Fullerton was a Christian missionary and teacher who founded the Princeton Christian Fellowship, called the Princeton Evangelical Fellowship until 2017, and served with it from 1931 until 1980. He was noted for convincing many students at Princeton University of what he saw as the truth of the Christian faith. Arthur Glasser also credited his conversion to Dr. Fullerton, through hearing him speak at the Keswick Bible Conference. In addition to his evangelistic efforts, Dr. Fullerton was a major spiritual influence on many students including Paul Pressler, a major figure in the Conservative resurgence of the Southern Baptist Convention, and the noted Reformed theologian John Frame. He was a member of the Princeton University Class of 1913 and received an honorary Doctorate of Ministry from Grace Theological Seminary.