Elphinstone is a rural locality in the Isaac Region, Queensland, Australia. In the , Elphinstone had a population of 9 people.
The Suttor Developmental Road enters the locality from the east (Kemmis) and exits to the west (Burton).
Isaac River rises in the north of the locality and flows south-west, exiting to the west (Burton). Anna Creek rises in he centre of the locality and flows south into Lake Elphinstone (), which supplied the water for the now-abandoned town of Elphinstone ().
Elphinstone has the following mountains and valleys (from north to south):
The land use is grazing on native vegetation.
The locality was named after explorer George Elphinstone Dalrymple, the leader of the 1859 and 1860 overland settlement expeditions to Port Denison from Rockhampton.
In 1859, Philip Sellheim reported finding Lake Elphinstone, which he called Lake Emilia after his sister. It was also called Lake Barton by W.H. Gaden, but it was ultimately named Lake Elphinstone after the explorer.
In the , Elphinstone had a population of 6 people.
In the , Elphinstone had a population of 9 people.
There are no schools in Elphinstone. The nearest government primary and secondary school is Glenden State School (PrepâÂÂ12) in neighbouring Glenden to the north.