Saddle Island is 1.98 kilometres (1.23 miles) long and 980 metres (1,070 yards) wide, situated on the south side of the entrance to Wilson Harbour on the west coast of South Georgia Island in the Antarctic. The island is separated from the mainland of South Georgia by a 280 metres (310 yards) wide passage.

Saddle Island is located at 54°08′25″S 37°44′57″W / 54.14028°S 37.74917°W / -54.14028; -37.74917, which is 18.9 kilometres (11.7 miles) southeast of Cape Paryadin, 29.1 kilometres (18.1 miles) west of Peggotty Bluff, and 26.3 kilometres (16.3 miles) northwest of Cape Nuñez.

• Composite Antarctic Gazetteer
• List of Antarctic and sub-Antarctic islands
• List of Antarctic islands north of 60° S

• South Georgia. Scale 1:200000 topographic map. DOS 610 Series. Directorate of Overseas Surveys, Tolworth, UK, 1958.

• Saddle Island — Agreement on the Conservation of Albatrosses and Petrels (ACAP) Data Portal
• Croxall, J.P. (18 June 1979). "Distribution and population changes in the wandering albatross Diomedea Exulans at South Georgia" (PDF). Ardea. Cambridge, England: British Antarctic Survey (BAS), Natural Environment Research Council (NERC). Archived from the original (PDF) on 11 October 2010.