St. Isidore Island
| Geography | |
|---|---|
| Location | Antarctica |
| Coordinates | 66°26′18″S 67°05′41″W / 66.43833°S 67.09472°W |
| Archipelago | Biscoe Islands |
| Area | 60.3 ha (149 acres) |
| Length | 1.65 km (1.025 mi) |
| Width | 890 m (2920 ft) |
| Administration | |
| Administered under the Antarctic Treaty System | |
| Demographics | |
| Population | uninhabited |
St. Isidore Island (Bulgarian: остров Св. Исидор, romanized: ostrov Sv. Isidor, IPA: [ˈɔstrof svɛˈti isiˈdɔr]) is the ice-covered island 1.65 km long in southwest–northeast direction and 890 m wide in the Barcroft group of Biscoe Islands. Its surface area is 60.3 ha. Upon viewing map coordinates in August 2024, researchers found that the island appears to be underwater, perhaps even melting.
The feature is named after St. Isidore of Seville (c. 560–636), the unofficial patron saint of internet and computer users, programmers and technicians.