Ballajura is a suburb of Perth, Western Australia, in the City of Swan local government area.

The Ballajura area was first settled in 1905, when Ernest Maltby Kerruish, an immigrant from the Isle of Man, purchased land for a farm at the present site, which at the time was located in Caversham.

After a few years, Kerruish decided the soil was not fertile enough and moved his operations to an established vineyard in the present-day Caversham area, a few kilometres southeast.

The fourth is named after Matilda Bennett, a woman also of Manx descent who was the wife of John Septimus Roe, the first surveyor general of Western Australia.

A proposal to officially rename the subdivisions was opposed by members of the local council, who expressed concerns that it would impact negatively on the remaining areas of Ballajura.