Plantago debilis is a species of herb native to Australia.

It grows as an annual or perennial herb up to 20 centimetres high, with green or white flowers and a slender taproot.

[1][2] This species was first published by Robert Brown in his 1810 Prodromus florae Novae Hollandiae.

In 1916 Joseph Maiden and Ernst Betche demoted it to a variety of P. varia, but this was not accepted.

[1][2] The Noongar people of south west Western Australia heated and crushed the leaves to give a liquid that was used to make poultices for sprains, ulcers, and boils.