Senna leptoclada is a species of flowering plant in the family Fabaceae and is endemic to Arnhem Land in northern Australia.

It is a glaucous, erect to drooping shrub with pinnate leaves usually with two pairs of broadly elliptic leaflets, and yellow flowers arranged in groups of two or three, with ten fertile stamens in each flower.

Senna leptoclada is a glaucous, erect to drooping shrub that typically grows to a height of up to 3 m (9.8 ft).

[2][3][4] This species was first formally described in 1864 by George Bentham who gave it the name Cassia leptoclada in Flora Australiensis, from specimens collected in the Gulf of Carpentaria by Robert Brown.

[7] Senna leptoclada is only known from Arnhem Land in the Northern Territory of Australia.