Ken Rex McElroy (June 1, 1934 – July 10, 1981) was an American criminal and convicted attempted murderer who resided in Skidmore, Missouri, United States. He was known as "the town bully", and his unsolved killing became the focus of international attention. Over the course of his life, McElroy was accused of dozens of felonies, including assault, child molestation, statutory rape, arson, animal cruelty, hog and cattle rustling, and burglary.