Eriocoma occidentalis is a species of grass known by the common name western needlegrass.

It is native to western North America from British Columbia to California, Colorado, and Arizona and in northeastern Mexico (Chihuahua),[1] where it grows in many types of habitat.

This is a tufting perennial bunchgrass forming tight clumps of erect stems up to about 120 centimetres (47 in) in maximum height, but sometimes much shorter.

The hairlike leaves are less than a millimeter wide and may have rolled edges.

[2] Three subspecies are accepted:[1] This Pooideae article is a stub.