| Henri Plocque | |
| Nationality: | French |
| Sport: | Equestrian |
| Birth Date: | 3 June 1873 |
| Birth Place: | Verrières-le-Buisson, Essonne, France |
| Death Place: | Miraumont, Somme, France |
Henri Eugène Alexandre Plocque (3 June 1873 - 28 September 1914) was a French equestrian. In May–June 1900, he competed in the equestrian events during the International Horse Show in Paris. The show was part of the Exposition Universelle, and the equestrian events were later classified as part of the 1900 Summer Olympics.[1]
Plocque served as a caporal (corporal) in the 27th Territorial Infantry Regiment of the French Army during the First World War. He was killed in action in Somme on 28 September 1914.[2]