Rifleman Gilbert Casiraghi was an English soldier of the British Army who died during the First World War.
He was born in 1897, in Hastings, the son of Swiss-born waiter Gilberto and Eleanor Lucretia Casiraghi (née Reiger), local to the area. At the time of the 1911 census, Casiraghi was living with his family at 43 Mornington Road, Regent's Park.
Casiraghi died on 25 April 1918, during Germany's Spring Offensive on the Western Front, while serving with the 1/9th (County of London) Battalion (Queen Victoria's Rifles), The London Regiment. He had formerly belonged to the Essex Regiment. A brother, Rudolph, a private in the Middlesex Regiment, had died on 5 October 1917.
He has no known grave and is commemorated by the Pozieres Memorial.
- Casiraghi, Gilbert, cwgc.org. Retrieved 3 October 2012.