藨草属（学名：Scirpus）是莎草科下的一个属，为簇生或散生草本植物。该属共有约200种，分布于全世界。

Scirpus is a genus of aquatic, grass-like species in the family Cyperaceae (the sedges), many with the common names club-rush or bulrush (see also bulrush for other plant genera so-named). Other common names are deergrass or grassweed. They have grass-like leaves, and clusters of small spikelets, often brown. Some species (e.g. S. lacustris) can reach a height of 3 m, while others (e.g. S. supinus) are much smaller, only reaching 20–30 cm tall.