Stanley Lawrence Greenslade FBA (14 May 1905 – 8 December 1977) was an English theologian, ecclesiastical historian and clergyman.
Born on 14 May 1905 into a Methodist family, he was the son of William Greenslade, a Bristol- and Woodford-based businessman, and Alice, née Sear.
He was educated at a state school in Woodford; from there, he won a highly competitive scholarship to Christ's Hospital.
By that time, he had turned to Anglicanism and spent a year reading for the theology honours school, in which he placed in the first class in 1928.
1964), Church and State from Constantine to Theodosius (1954, which he had given as the Frederick Denison Maurice Lecture at King's College London in 1953) and Early Latin Theology: Selections from Tertullian, Cyprian, Ambrose and Jerome (1956).