| Borda Rock | |
| Map: | Antarctica#South Shetland Islands |
| Map Relief: | yes |
| Location: | Antarctica |
| Coordinates: | -62.9171°N -62.5375°W |
| Archipelago: | South Shetland Islands |
| Area Ha: | 1.46 |
| Length M: | 270 |
| Width M: | 90 |
| Population: | uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty |
Borda Rock (Bulgarian: скала Борда|skala Borda, in Bulgarian pronounced as /skɐˈla borˈda/) is the rock off the NW coast of Smith Island in the South Shetland Islands, Antarctica 270 m long in southwest-northeast direction and 90 m wide (extending 543 by 175 m together with the adjacent minor rocks). Its surface area is 1.46 ha. The vicinity was visited by early 19th century sealers.[1]
The feature is named after Jean-Charles de Borda (1733-1799), a French mathematician, physicist and Navy officer who refined the reflecting circle; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.
Borda Rock is located at -62.9171°N -62.5375°W,[2] which is 240 m northwest of Gregory Point. Bulgarian mapping in 2009 and 2017.