| Casabianca Island | |
| Map: | Antarctic Peninsula |
| Location: | Antarctica |
| Archipelago: | Palmer Archipelago |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Casabianca Island is a low, rocky island lying in Neumayer Channel 0.50NaN0 northeast of Damoy Point, Wiencke Island, in the Palmer Archipelago. It was discovered by the French Antarctic Expedition under Jean-Baptiste Charcot, 1903–05, who named it for Monsieur Casabianca, then French Administrator of Naval Enlistment.