Margin Walker is an EP by the American post-hardcore band Fugazi. It was originally released in June 1989 on vinyl and again in the same year on the compilation release 13 Songs along with the debut EP Fugazi. The 12" vinyl went out of print, but was remastered and reissued by Dischord Records in October 2009.
It was originally intended to be a full-length album, but it was released as an EP due to sub-par performances in the other recorded songs.