Knockemstiff, also known as Glenn Shade or Shady Glenn, is a ghost town located in northeastern Huntington Township, Ross County, Ohio, United States, to the southwest of Chillicothe. It sits at an elevation of 692 ft. (211 m). The Geographic Names Information System gives Knockemstiff's coordinates as 39°16′04″ N, 83°07′09″ W, placing the original hamlet at the junction of Black Run Road (County Road 156) and Shady Glen Road.