Pierre-Julien-Léonidas Bissonnette (February 25, 1861 – May 11, 1914) was a physician and political figure in Quebec.

He represented Montcalm in the Legislative Assembly of Quebec from 1897 to 1908 as a Liberal.

He was born in La Prairie, Canada East, the son of Pierre Bissonnette and Esther Gélineau.

He was educated at the Victoria medical school in Montreal, qualified as a physician in 1887 and set up practice in Saint-Esprit.

Bissonnette served twelves years as a member of the provincial board of hygiene.