Harley James Overturf (also known as H. J. Overturf and Jim Overturf; April 6, 1882 – February 6, 1974) was an American politician and businessman from the state of Oregon. He was a Republican who served four years in the Oregon House of Representatives, where he represented a large rural district in eastern Oregon. Overturf Butte in Bend, Oregon, is named in his honor.