长芒扁雀麦（学名：Bromus carinatus），又名显脊雀麦，为禾本科雀麦属下的一个种。

Bromus carinatus is a species of brome grass known by the common names California brome and mountain brome.

It is native to western North America from Alaska to northern Mexico, where it can be found in many types of habitat. It is known in parts of the American midwest and eastern North America as an introduced species.