Crupina is a small genus of plants in the tribe Cardueae within the family Asteraceae.

The common crupina Crupina vulgaris is a notorious noxious weed on several continents.

The other species, Crupina crupinastrum, also has the potential to become weedy, but it is not as bad a pest at the current time.

These are thistle-like plants with bright deep pink flower heads.

This Cardueae article is a stub.