Guraleus singletoni is an extinct species of sea snail, a marine gastropod mollusc, in the family Mangeliidae. Fossils of the species date to early Pliocene strata of the St Vincent Basin of South Australia and the Otway Basin of South Australia and Victoria, including the Grange Burn Formation near Hamilton, Victoria.
In the original description, Powell described the species as follows:
The holotype of the species measures in length and has a diameter of .
The species was first described by A. W. B. Powell in 1944. The holotype was collected at an unknown date prior to 1945 from the Grange Burn Formation near Hamilton, Victoria. It is held in the collections of Auckland War Memorial Museum.
This extinct marine species occurs in early Pliocene strata of the Otway Basin of South Australia and Victoria, including the Grange Burn Formation of Victoria.