David Louis Walker (born 13 November 1938) is a retired Australian bishop of the Roman Catholic Church.
David Louis Walker spent his childhood in the Sydney suburb of Clovelly until he began seminary training in 1956.
Walker was director of the Educational Centre for Christian Spirituality which he established in Randwick in 1978 until his appointment as bishop.
Walker is a speaker and has published on faith renewal, spirituality, mysticism, formation of clergy and church leadership.
He was a board member of the Australasian Catholic Record and a former consultant to the National Council of Churches.