Luis Alfredo Garavito Cubillos (25 January 1957 – 12 October 2023), also known as La Bestia ("The Beast") or Tribilín ("Goofy"), was a Colombian serial killer, sex offender, pedophile, and necrophile who sexually assaulted 200 victims before sexually assaulting and murdering 193 victims, mostly young men and boys from 1992 to 1999 in western Colombia.

Beginning a series of torture-rapes on minors aged 6 to 16 in the autumn of 1980, Garavito was estimated to have raped and tortured a minimum of 200 minors, before committing the rape, torture, mutilation, and murder of an additional 189 minors in Colombia from 4 October 1992 to 21 April 1999, and a further four murders in Ecuador during the summer of 1998.

Apprehended on 22 April 1999 for the attempted rape of 12-year-old John Iván Sabogal, Garavito was held under suspicion for several months until he confessed on 28 October 1999. The court ruled that Garavito should serve sentences totalling 1,853 years and 9 days in prison. Between his Colombian and Ecuadorian victims, Garavito is confirmed to have murdered at least 193 minors in total, making him the most prolific serial killer and child molester in modern history. If his 2003 confession is to be believed, his murders of 23 minors and 5 adults would raise his murder victim count to 221.