James William Jones ISO (1843 – 26 April 1920) was a South Australian surveyor and senior public servant.
He was educated at J. L. Young's Adelaide Educational Institution, and was soon working for his father on the Port Elliot to Goolwa tramway, for which his father received official criticism.
He joined the State public service as a draughtsman in 1865 and was appointed Chief Surveyor then Deputy Surveyor-General in the Department of Survey and Crown Lands.
He explored the area north-east of Eucla in 1880, and discovered the Kudna rockhole and catacombs,[6] an immense network of limestone caves, lakes and underground passages under the Nullarbor Plain.
He was secretary of the South Australia branch of the Royal Geographical Society of Australasia from its foundation in 1885 to 1894.