William Cosgrove VC MSM | |
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| Born | 1 October 1888 Aghada, County Cork |
| Died | 14 July 1936 (aged 47) Millbank, London |
| Buried | Upper Aghada |
| Allegiance | United Kingdom of Great Britain and Ireland |
| Service/ |  British Army |
| Years of service | 1909–1935 |
| Rank | Staff Sergeant |
| Unit | Royal Munster Fusiliers Northumberland Fusiliers Indian Territorial Force |
| Battles/wars | First World War |
| Awards |  Victoria Cross.png){kind=small} Meritorious Service Medal |
William Cosgrove VC MSM (1 October 1888 – 14 July 1936) was an Irish recipient of the Victoria Cross, the highest and most prestigious award for gallantry in the face of the enemy that can be awarded to British and Commonwealth forces.