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 14 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 16 times, and after refusing to appeal his sentence, was executed in Arkansas on June 25, 1990.