Crime Solvers Central
CSC
278 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Larry MATTIS missing person case profile photo

Larry Ray MATTIS Missing Person Case

Last seen in Slave Lake, Alberta on Mar 10, 1983

Victim Details

Larry Ray

MATTIS

70

27

69 inches

69 inches

170 lbs

170 lbs

White / Caucasian

Male

Scar Right Hand, above index finger

Mar 10, 1983

Slave Lake

Alberta

Slave Lake RCMP

Slave Lake

Alberta

780-849-3999

780-849-3999

Law Enforcement

2015980110

Slave Lake RCMP

Brown

Blue

Blue

Build: Medium

No


Area Last Seen:

Case Description

Any updates on this case? Let us know!
Larry Mattis was last seen on March 10, 1983 when he was taken to the Edmonton, Alberta airport by a friend and dropped off for a flight to Toronto, Ontario. At the time of his disappearance, Larry was living a high-risk lifestyle.
Last Seen: Mar 10, 1983

Links to Additional Sources (1)

See any mistakes? Let us know!
  • Canada's Missing - RCMP case 2014003613

    • Latest News

    View All

    Forum Posts (0)

     
    MEMBER ACCESS

    Join the discussion for Larry Ray MATTIS

    Read full forum posts and contribute to this case discussion.

    Unlock forum access — $3.97/month
    Already a member? Log in

    Other Missing Cases from Slave Lake, Alberta

    Patrick AUGER missing person case in Slave Lake, Alberta

    Patrick AUGER

    Missing: Oct 28, 1983
    On October 28, 1983, Patrick Auger left his residence in Desmarais, Alberta, to travel to Slave Lake ...Read More
    Jeffrey Andrew DUPRES missing person case in Slave Lake, Alberta

    Jeffrey Andrew DUPRES

    Missing: Apr 24, 1980
    Jeffrey was taken by a couple driving a 1979-80 blue chevy truck. ...Read More
    Brian Bruce AUGER missing person case in Slave Lake, Alberta

    Brian Bruce AUGER

    Missing: Dec 13, 2025
    On December 16, 2025, Brian Auger was reported missing to Red Earth Creek RCMP in Alberta. There is ...Read More
    Joel Aaron JUDD missing person case in Slave Lake, Alberta

    Joel Aaron JUDD

    Missing: Dec 29, 2019
    On December 29, 2020 between 4:00 and 5:00 am, Joel Judd was last seen leaving a party at a residenc ...Read More