Jeffrey Paul Petritz, known as Jeff, was 23 when he was last heard from on July 18, 1985, at his home in Mesa, Arizona. He was due to leave on a business trip to Colorado on July 19, but never arrived and did not contact his employer. He is described as a White/Caucasian male, 5 feet 5 inches to 5 feet 7 inches tall, 145–150 pounds, with brown hair and blue eyes.

A check of his apartment in Mesa found his suitcase and personal belongings still there, which suggests he did not depart as planned. The Mesa Police Department is the investigating agency; a NamUs case was opened on August 28, 2012. The circumstances of his disappearance remain unexplained and the case is open with no significant leads reported.

If anyone knew Jeff, saw him around July 18–19, 1985, or has information that might clarify what happened, please share what you can with the Mesa Police Department.