Private Sydney Frank Ludwig was an English soldier of the British Army who died during the First World War.
He was born in 1892, in Whitechapel, the son of German-born Metropolitan policeman Frank and Marie Elizabeth Ludwig (née Bronze), of London. At the time of the 1911 census, the younger Ludwig was working as a wholesale newsagent.
Ludwig died on 9 August 1915, during an attack at Hooge in the Ypres Salient, while serving with the 1st Battalion, The Buffs (East Kent Regiment) on the Western Front.
He has no known grave and is commemorated by the Menin Gate Memorial.
- Ludwig, Sydney Frank, cwgc.org. Retrieved 21 October 1915.