Louis Hyacinthe Bouilhet (27 May 1821 – 18 July 1869) was a French poet and dramatist.

He was a schoolfellow of Gustave Flaubert, to whom he dedicated his first work, Melaenis, conte romain (1851), a narrative poem in five cantos dealing with Roman manners under the emperor Commodus.

His volume of poems Fossiles attracted considerable attention for being an attempt to make science a subject for poetry.

As a dramatist he was successful with his first play, Madame de Monlarcy (1856), which ran for 28 nights at the Odéon; Hélène Peyron (1858) and L'Oncle Million (1860) were also favorably received.

Of his other plays, only Conjuration d'Amboise (1866) met with any real success.