Major General Hurdis Secundus Lalande Ravenshaw CMG (June 1869 – c. 6 June 1920) was a senior British Army officer during the First World War who served at the Royal Military College, Sandhurst and saw action on the North-West Frontier of India, in South Africa during the Second Boer War and in France and Greece during the First World War. In 1916 he was captured by an Austrian submarine and held as a prisoner for the next two years.