The Junior Order of United American Mechanics is an American fraternal order. It began as a youth affiliation of the Order of United American Mechanics, but seceded to become its own organization and eventually absorbed its parent order. Originally, it was an anti-Catholic, nativist group. Between 1925 and 1932, they constructed the Junior Order United American Mechanics National Orphans Home near Lexington, North Carolina. It was added to the National Register of Historic Places in 1984.