| Nikudin Rock | |
| Map: | Antarctica#Antarctic Peninsula |
| Map Relief: | yes |
| Location: | Antarctica |
| Coordinates: | -62.3838°N -59.8425°W |
| Archipelago: | South Shetland Islands |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Nikudin Rock (Bulgarian: скала Никудин, ‘Skala Nikudin’ \ska-'la ni-ku-'din\) is the high, round rock of diameter 180 m and split in northeast-southwest direction, lying off the north coast of Greenwich Island in the South Shetland Islands. The area was visited by early 19th century sealers.
The rock is named after the settlement of Nikudin in Southwestern Bulgaria.
Nikudin Rock is located at -62.3838°N -59.8425°W, which is 2.25 km west-northwest of Emeline Island, 1.3 km north by east of Stoker Island and 4 km east-southeast of Romeo Island, and is separated from neighbouring Holmes Rock to the east-northeast by a 150 m wide passage. British mapping in 1968 and Bulgarian mapping in 2009.
