Marmaduke Cecil Allenby (30 August 1873 — 16 April 1932) was an English first-class cricketer and an officer in the Royal Navy.
[2] Allenby made a single appearance in first-class cricket for Hampshire against Sussex at Portsmouth in the 1900 County Championship.
[4] He also played minor counties cricket for Devon, making two appearances against Monmouthshire and Glamorgan in 1902, and a third against Cornwall in 1911.
[8] He returned to active service during the First World War, where he was appointed a superintendent with the Chart and Chronometer Depot at Sheerness Dockyard.
[9] He was promoted to captain on the final day of the war, in recognition of his service during the conflict.