Gunner Douglas Roy Manley was a Jamaican soldier of the British Army who died during the First World War.
He was born the son of businessman Thomas Albert Samuel and Margaret Manley (née Shearer). Like his siblings, Manley studied in England before the war, attending West Cornwall College and Felstead Public School.
With his brother Norman, he volunteered for the British Army in 1915, joining the Royal Field Artillery. Manley died on 26 July 1917, on the Western Front, while serving with "D" Battery, 174th Brigade, RFA. His brother survived the conflict, going onto become a noted lawyer and the second prime minister of an independent Jamaica.
Manley is buried in Poperinghe New Military Cemetery, Belgium.
- Manning, D R, cwgc.org. Retrieved 16 October 2012.