Triplarina bancroftii is a species of flowering plant in the myrtle family, Myrtaceae and is endemic to a restricted area of Queensland.

It is a shrub with egg-shaped or elliptic leaves, flowers with five sepals and five relatively small white petals and sixteen to eighteen stamens.

[2] Triplarina bancroftii was first formally described by Anthony Bean in 1995 and the description was published in the journal Austrobaileya from specimens he collected in Cania Gorge National Park in 1993.

[2][3] The specific epithet (bancroftii) honours Thomas Lane Bancroft, the first person to collect this species.

[2] This triplarina is only known from two populations, one in the Cania Gorge National Park and the other 80 km (50 mi) south.