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Jason Theis Missing Person Case

Last seen in Calimesa, California on Sep 13, 2012

Victim Details

Apr 2, 2018

Jan 12, 2024

Jason

Theis

40

26

73 inches

74 inches

270 lbs

275 lbs

White / Caucasian

Male

Sep 13, 2012

Calimesa

California

Riverside County

92320

32158

San Bernardino County Sheriff's Department- Yucaipa Patrol Station

Yucaipa

California

San Bernardino County

92399

Shelby Swanson

Sheriff's Detective

34144 Yucaipa Boulevard, California

9099182305

County

Law Enforcement

https://wp.sbcounty.gov/sheriff/patrol-stations/yucaipa/

141300100

Jan 8, 2013

San Bernardino County Sheriff's Department- Yucaipa Patrol Station

na

Black

Brown

Brown

Oct 16, 2026


Area Last Seen:

Case Description

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Summary based on the NamUs case record (MP42913) and 3 other sources
Jason Dale Theis, a 26-year-old from Calimesa, California, was last seen on September 13, 2012. Standing 6'2" and weighing approximately 270 pounds, Jason had black hair and brown eyes. Prior to his disappearance, Jason told his family that he was planning to travel to Ireland. However, after September 13, all contact with him ceased, and he has not been heard from since.

Jason's family and law enforcement have had no updates regarding his whereabouts, and there are few details available about the circumstances of his disappearance. The San Bernardino County Sheriff's Department is the lead investigative agency, and Jason remains classified as a missing person. His case is still open, and authorities are seeking any information that might help resolve the mystery of his disappearance.
Last Seen: Sep 13, 2012

Links to Additional Sources (3)

See any mistakes? Let us know!
  • Missing Person / NamUs #MP42913
  • Jason Dale Theis | State of California - Department of Justice
  • Jason Dale Theis - The Charley Project

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    Forum Posts (2)

    I recently came across the case of Jason Dale Theis and have been curious about his plan to travel... ...Read More
    07/20/2024
    Hey everyone, I was digging through some old missing persons cases and came across Jason Dale Theis.... ...Read More
    01/09/2023

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