Captain Hugh Kennedy Cassels was an officer of the British Army who died during the First World War.
He was born in 1894, in Buenos Aires, the son of merchant Walter Richie Cassels, born in Oporto to British parents, and Elvina Eusebia de Trillia, of Uruguay.
Cassels died on 25 September 1915, on the opening day of the Battle of Loos, while serving with the 8th Battalion, The Royal Berkshire Regiment on the Western Front. He had arrived in France in August. A brother, Frank Lionel, a lieutenant in the Royal Engineers, died in July 1916.
He is buried in Bois-Carre Military Cemetery, Haisnes.
- Cassels, H K, cwgc.org. Retrieved 9 January 2013.