Justin Jean-Baptiste Hippolyte Pradelles (29 March 1824 – 6 January 1913) was a French landscape painter.
Initially working as a draughtsman and watercolourist, Pradelles later moved into painting, principally producing regional landscapes but also genre and military scenes.
He volunteered to fight in the Crimean War, where he made several drawings, including four published in L'Illustration.
He joined with Louis-Augustin Auguin, Jean-Baptiste Corot and Gustave Courbet to form the short-lived Port-Berteau group in 1862.
It painted landscapes in the open air around Bussac-sur-Charente until 1863, when it was dissolved.