Loeseneriella barbata, commonly known as knot vine, is a climbing plant in the family Celastraceae found in New South Wales and Queensland, Australia.

Loeseneriella barbata is a woody vine with a stem diameter up to 4 cm (1.6 in), whose tendrils often form knot-like coils around supports.

[4][5][6] This plant was first described as Hippocratea barbata by botanist Ferdinand von Mueller in 1859, and transferred to the genus Loeseneriella in 1944 by Cyril Tenison White.

[2][1][6] The knot vine occurs in two widely separated populations in eastern parts of Queensland and northeastern New South Wales.

The northern population is found from the top of Cape York Peninsula south to about Ayr.