- Herbert John Gladstone, 1st Viscount Gladstone 1910-1914
- Sydney Charles Buxton, 1st Viscount Buxton 1914-1920
- Prince Arthur of Connaught 1920-1923
- Augustus Alexander Cambridge, 1st Earl of Athlone 1924-1930
- George Herbert Hyde Villiers, 6th Earl of Clarendon 1931-1937
- Sir Patrick Duncan 1937-1943
- Nicolaas Jacobus de Wet 1943-1946
- Gideon Brand van Zyl 1946-1951
- Ernest George Jansen 1951-1959
- Charles Robberts Swart 1959-1961