Hypochaeris glabra is a species of flowering plant in the tribe Cichorieae within the family Asteraceae known by the common name smooth cat's ear.

It is native to Europe,[2] North Africa, and the Middle East but it can be found on other continents where it is an introduced species and a widespread weed.

[3][4][5][6] Hypochaeris glabra is an annual herb growing a small taproot, a basal rosette of leaves, and one or more thin stems 10–40 cm (4–16 in) tall.

The leaves are 2–10 cm (3⁄4–4 in) long, smooth along the edges or with small lobes, and green in color, sometimes with a purplish tint near the veins.

Atop the thin, naked stems are flower heads with small overlapping purple-tipped phyllaries and bright yellow ray florets.