Gardi Sugdub, also spelled Cartí Sugtupu, is an island in the San Blas Archipelago in the Panamanian comarca indígena of Guna Yala, 400m long and 150m wide. It is the southernmost and largest of four populated Carti Islands (the others are Cartí Tupile in the north, Carti Yandup in the west, and Carti Muladub in the east), and lies 1200 meters off the northern coast of mainland Panama. The island houses a small harbour and a museum, as well as a now-disused schoolhouse. Its indigenous inhabitants are Guna.
Discussions of relocation to a site on the mainland thanks to overpopulation on the island were first raised by Guna elders in 2008. The Panamanian government constructed the new village of Isber Yala between 2015 and 2024, construction being delayed due to funding issues, and following its completion in June 2024, 300 families moved from Gardi Sugdub into the new village.