Pierre Joseph Garidel (1 August 1658 – 6 June 1737) was a French botanist.
Garidel was born in Manosque. He did medical studies in Mérindol and Bicaïs. Engrossed in botanics, he became a Professor of Botany in Aix-en-Provence.
In the wake of Joseph Pitton de Tournefort and Charles Plumier, he studied plants from Provence. He died, aged 78, in Aix-en-Provence.
In 1735 he published, Histoire des plantes qui naissent aux environs d'Aix et dans plusieurs autres endroits de la Provence, which describes 1 400 plantes. In the preface, Garidel writes about the history of botany in Provence.