Jacques Désiré Leandri, born 1903 in Corsica, died 1982, was a French botanist and mycologist.
Leandri is remembered for botanical excursions in North Africa (Morocco) and Madagascar. He collected plants for scientific study from the years 1922 to 1980. The plant genus Leandriella from the family Acanthaceae is named after him. As a taxonomist, he circumscribed many plants within the family Euphorbiaceae.