Download coordinates as: The County of Bosanquet is a cadastral unit in the Australian state of South Australia that covers land both in the north of the Eyre Peninsula and to the peninsula's north.

It was proclaimed on 23 October 1913 and was named after Sir Day Hort Bosanquet, the Governor of South Australia from 1909 to 1914.

The following gazetted localities, mainly based on pastoral leases, are within the county: Thurlga and parts of Buckleboo, Carriewarloo, Cooyerdoo, Corunna Station, Gawler Ranges, Hiltaba, Kolendo, Lake Gairdner, Mount Ive, and Yardea.

[2][10][11] The county's land is mainly used for primary production and conservation, the latter including the Gawler Ranges National Park and Lake Gairdner National Park.

It covers an area of 260 square kilometres (100 sq mi) and is named after Pildappa Hill (Pildappa Rock), a feature located within the hundred and whose name is derived from a "native word for 'rockwater'".