Gabriel Hill is the summit of Half Moon Island in the South Shetland Islands, Antarctica. It is a rocky hill rising to 101 m in the island's northwest extremity and surmounting Moon Bay to the west and Menguante Cove to the southeast. The area was visited by early 19th century sealers operating from nearby Yankee Harbour.
The feature's name appeared in a 2000 publication following Argentine ornithological research on the island, and in the 2005 and 2009 Bulgarian maps of Livingston Island.
The hill located at -62.5875°N -59.9272°W which is 690 m southwest of Xenia Hill, 1.03 km north by west of La Morenita Hill, 10.43 km east by north of Sliven Peak, Livingston Island, 8.1 km east by south of Sindel Point, Livingston Island and 6.81 km southeast of Edinburgh Hill, Livingston Island (Bulgarian mapping in 2005 and 2009).
