| Birth Name: | Auguste-Hilaire Eugène Lampsonius |
| Birth Date: | 1822 |
| Birth Place: | Joué-du-Bois |
| Death Date: | 1871 |
| Death Place: | Paris |
| Nationality: | French |
| Field: | Illustration Portraiture |
Auguste-Hilaire Eugène Lampsonius (1822–1871) was a French painter and illustrator.
He is best known for his illustrations of the works of Eugène Sue, Honoré de Balzac, and Alexandre Dumas, as well as for his graphite portraits of Comédie-Française actors. He signed these portraits as Eustache Lorsay.
Lampsonius was born in Joué-du-Bois, and died in Paris in 1871.