Eileen Egan (1912–2000) was a journalist, Roman Catholic activist, and co-founder of the Catholic peace group, American PAX Association and its successor Pax Christi-USA, the American branch of International Pax Christi. Starting 1943 she remained an active member of Catholic Relief Services, and a longtime friend of Dorothy Day and Mother Teresa, whose biography she wrote, Such A Vision: Mother Teresa, the Spirit, and the Work, and marched with Martin Luther King Jr. at Selma. She first coined the term "seamless garment" to describe the unity of the teaching of the Roman Catholic Church on the premise that all human life is sacred and should be protected by law.