Oen Bo-Hyun (Korean: 온보현; Hanja: 溫保鉉, April 6, 1957 – November 2, 1995) was a South Korean spree killer and rapist who attacked six women in Seoul in September 1994, killing two.

Oen Bo-Hyun's crime spree was uncovered immediately after the Chijon family's killings, causing a great social impact.

Citizens complained about the spike of serial murder in the country,[4] with women being extremely reluctant to take taxis at night.

[5] In an interview with Weekly Trends in August 2006, Pyo Chang-won, a professor at the Korean National Police University, pointed out that the backgrounds of serial killers such as the Chijon Family, Oen Bo-Hyun and Yoo Young-chul is marred by a twisted psychological state, childhood issues and dissatisfaction with society.

Oen Bo-Hyun was sentenced to death for his crimes, and on November 2, 1995, he, along with 19 other violent criminals, including most members of the Chijon family, were executed.