The person at the center of this case
Mark Alan Cohen
Missing Person · Open
15 years waiting · since 2011
Missing Person: Mark Alan Cohen
Justice for Mark Alan Cohen — the trail went cold in 2011, but the truth hasn't.
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Key leads to think about
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vehicle
Lead #1What boat was Cohen using, and has it ever been located or recovered?
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witness
Lead #2Were there any witnesses who saw Cohen or his boat on or after May 30, 2011?
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clue
Lead #3What prompted the belief that Cohen left in his boat—was there evidence of departure or a note?
Mark Alan Cohen, a 55-year-old white male, was last contacted on May 30, 2011, in Palm Beach Gardens, Florida, and is believed to have left in his boat. The circumstances surrounding his disappearance remain unclear, with no confirmed sightings or recovery since that date. Anyone with information about Cohen's whereabouts or his boat is urged to contact the Palm Beach County Sheriff's Office.
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More leads to consider
Beyond the top three above — each detail below could be the thread that pulls this case open.
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location
Lead #4Where was Cohen's boat typically moored or kept, and were there any signs of activity?
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Even the smallest detail could be the key to solving this case.
Official wording
Source Narrative
NamUs case MP13948. Missing person: Mark Alan Cohen.
Last known contact: 2011-05-30 in Palm Beach Gardens, Palm Beach, FL. Circumstances: Cohen is believed to have left in his boat.
Demographics: 55 years, Male, White / Caucasian. Physical description: 5 ft 8 in, 200 lbs, hair: Brown, eyes: Hazel.
Clothing and accessories: Clothing: Unknown color polo shirt, blue jean shorts. Investigating agency: Palm Beach County Sheriff's Office | 11-080119 | 2011-05-30.
Timeline of Events
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2011-05-30
Last Contact
Mark Alan Cohen was last known to be in contact in Palm Beach Gardens, Florida. He is believed to have left in his boat.
Key Locations
Interactive map showing important locations related to this case
Case Information
Incident:May 30, 2011
Last Updated:June 30, 2026
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Any information, no matter how small, could be crucial to solving this case.
Phone: 5616883000
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Case Information
Incident:May 30, 2011
Last Updated:June 30, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 5616883000
You can remain anonymous