山牛蒡属（学名：Synurus）是菊科下的一个属，为多年生、大形、分枝草本植物。该属共有约8种，分布于西伯利亚至日本。

Synurus is a genus of Asian plants in the thistle tribe within the daisy family.

Synurus has a thick stem up to 1.5 meters tall. It produces large, nodding, spherical flower heads up to 6 centimeters wide with purple florets.

The anti-inflammatory properties of the plant as an herbal remedy have been well studied. It is eaten as a wild vegetable in Korea.