The barnacles associated with loggerhead sea turtles from the Gulf of Gabès are reported. Eleven species were identified from four families: Chelonibiidae (3 species), Lepadidae (2 species), Platylepadidae (3 species) and Balanidae (3 species). The chelonophilic barnacle Stephanolepas muricata is recorded for the first time from the south and central Mediterranean Sea. The preferential distribution of epibiotic Cirripedia is discussed.