Bromus rigidus, the ripgut brome, is a grass native to Eurasia and naturalized in North America.

The lance-attenuate lemmas are unequal, with the lower having a long tooth on each side of the awn and the upper tapering to the beak.

[1] The common name "ripgut brome" refers to the heavy sclerotization of the species, creating a hazard to livestock.

[3] Bromus rigidus is common in waste places and rare near ports in the United States, occurring around areas such as Maryland, District of Columbia and north to Massachusetts.

[1] In Europe the grass occurs in the south and west, growing in weedy or disturbed areas, road verges, and ports.