银须草属（学名：Aira）是禾本科下的一个属，为矮小、一年生草本植物。该属共有约9种，分布于南欧。

Aira is a genus of Old World plants in the grass family, native to western and southern Europe, central and southwest Asia, plus Africa.

The common name, shared with the similar related genera Deschampsia and Koeleria, is hair-grass, from the very slender leaves and stems. The species typically occur on dry, sandy sites, and grow to 20–40 cm tall.