John Emory Hoff was 35 when he was last seen in Laramie County, Wyoming, on July 9, 2019. He was known by the nicknames J Rock and Little John.

At the time he disappeared he was reportedly driving a blue Ford Expedition with Nebraska license plates. Publicly released information about his movements that day is very limited: no detailed timeline, destination, or travel route has been provided, and he has not been heard from since that last known sighting. The Cheyenne Police Department is listed as the investigating agency.

Anyone with credible information about his whereabouts, his vehicle, or the circumstances surrounding his disappearance is asked to contact the law-enforcement agency of jurisdiction or Wyoming DCI.