The Hundred of Dudley is a cadastral unit of hundred located in the Australian state of South Australia on Kangaroo Island and which covers an area of 300 square kilometres (117 sq mi) including the full extent of the Dudley Peninsula (known as the MacDonnell Peninsula from 1857 to 1986) and some land to the west of the peninsula.

[4] The hundred is reported as being named by Governor Musgrave after his father-in-law, Dudley Field who was an American jurist.

[1][5][6] As of 1905, the hundred was described as follows:[5][7] Both the soil and timber are good and, from Willson's orchard, apples were being picked and stored in cases betwixt layers of dry grass to preserve them from the constant attentions of the Rosella parrot... At a point between Cape Hart and False Cape the property of Mr. William Lyall is situated.

From here a glorious view of the Southern Ocean is obtainable, with Flour Cask and Pennington Bays in the distance.

These, with iguanas lazing in the sun in the middle of our track, lent additional interest to the trip...The Dudley School on Kangaroo Island opened as ‘Hill River’ in 1880; changed to ‘Hill River South’ in 1885 and then to ‘Dudley’ in 1905 but it closed in 1941.