Ronald Gene Simmons Sr.

Ronald Gene Simmons, Sr., (July 15, 1940 – June 25, 1990) was an American spree killer, who killed 16 people over a week-long period in Arkansas in 1987. A retired military serviceman, Simmons murdered fourteen members of his family, including a daughter he had sexually abused and the child he had fathered with her, a former co-worker, and a stranger, and wounded four others.

Simmons was sentenced to death sixteen times, and after refusing to appeal his sentence, was executed by Arkansas in 1990.

He is also known as the "Hillbilly from Hell".