Henry Kemble Southwell (20 November 1860 – 9 March 1937) was the third Bishop of Lewes from 1920 until 1926.
Born in 1860, and educated at Charterhouse and Magdalen College, Oxford, he held curacies at Ellesmere in Shropshire, St Clement's in Bournemouth and St Nicolas in Guildford; then incumbencies at Chetton and Bodmin before becoming a Canon Residentiary of Chichester Cathedral.
He served throughout the First World War in the Army Chaplains' Department, from 1914 to 1919, and was elevated to Assistant Chaplain-General, and was made a Companion of the Order of St Michael and St George in the 1916 Birthday Honours for services in the field.
Elevated to the Episcopate in 1920, initially with the additional title of Archdeacon of Lewes, he held office for six years. He died on 9 March 1937 in Chichester, his son having predeceased him during the First World War. A fund initiated after his death yielded enough contributions to provide a memorial, which can be seen at St Cuthman Whitehawk in Brighton.