The tadpole of the endemic Corsican painted frogDiscoglossus montalentiiLanza, Nascetti, Capula & Bullini, 1984 is described on the basis of two samples obtained in captivity from in‐traspecific breeding. Tadpoles of this species possess a ventral spiraculum, dorsal eyes and nares, and a relatively long tail which is rounded at the end. The oral disk is completely bordered by a single series of marginal papillae and, in advanced larval stages (i.e., from stage 35), the two anterior and the three posterior ker‐atodont rows usually comprise three or four subrows. In Corsica, whereD. montalentiiandD. sardusare often found in syntopy, the identification of their tadpoles appears relatively easy only if the developmental stage is taken into account: the tadpole ofD. montalentiialways possesses a complete series of marginal papillae, a higher total number of keratodont subrows, a larger body size, and a differently shaped tail. These characters permit identification of CorsicanDiscoglossustadpoles. The results have important implications for both in ecological and management strategies necessary to the preservation of the endemic Corsican painted frog.