Juanita Jean Nelson was a 17-year-old high school senior last seen December 14, 1998, in Boulder Creek, California. She disappeared while walking to San Lorenzo Valley High School; on that morning she wore a white quilted jacket and green pants and was several months pregnant. Early inquiries considered the possibility she left voluntarily, but investigators later treated her disappearance as a probable homicide.

Police focused on a former friend who was later imprisoned for an unrelated offense. That man reportedly told two acquaintances he had killed Juanita and disposed of her body in a remote canyon in the Santa Cruz Mountains. Searches of the rugged area turned up no remains, and without a body authorities have not been able to bring charges. A memorial service for Juanita was held in 2003.

Juanita was described as vibrant and outgoing, active in ballet and theater and well known in her circle. Her case remains unsolved; does anyone have information about Juanita, her movements on December 14, 1998, or knowledge of that canyon area?