Hibbertia tenuis, commonly known as Yundi guinea-flower,[2] is a species of flowering plant in the family Dilleniaceae and is endemic to a restricted area of the Fleurieu Peninsula, South Australia.

It is a delicate, low-lying to scrambling shrublet with hairy foliage, linear leaves and bright yellow flowers with four to six stamens on one side of two carpels.

Hibbertia tenuis is a delicate, low-lying to scrambling shrublet with branches up to 50 cm (20 in) long and foliage covered with small, star-shaped hairs.

[3] This hibbertia grows in low or sparse vegetation in wetland and swampy areas near Mount Compass.

[2][3][4][5] Hibbertia tenuis is listed as "critically endangered" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999.