亚麻属（学名：Linum）是亚麻科下的一个属，为一年生草本植物，少数为半灌木植物。该属共有230种，主要产自欧洲地中海区。

Linum (flax) is a genus of approximately 200 species in the flowering plant family Linaceae. They are native to temperate and subtropical regions of the world. The genus includes the common flax (L. usitatissimum), the bast fibre of which is used to produce linen and the seeds to produce linseed oil.