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 where was it kept? Has the vessel ever been located?
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location
Lead #2Were there any marinas, boat launches, or waterfront locations near Palm Beach Gardens where Cohen may have departed?
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witness
Lead #3Did anyone observe Cohen at the marina or on the water on May 30, 2011?
Mark Alan Cohen, a 55-year-old white male, was last seen on May 30, 2011, in Palm Beach Gardens, Florida, and is believed to have left in his boat. Despite over a decade of investigation by the Palm Beach County Sheriff's Office, his whereabouts remain unknown. Anyone with information about Cohen's disappearance or potential sightings is urged to contact authorities.
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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.
💡
clue
Lead #4Why did Cohen leave in his boat that day? Was there a planned trip or destination?
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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
👤
2011-05-30
Last Known Contact
Mark Alan Cohen last seen in Palm Beach Gardens, FL. 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:September 28, 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:September 28, 2026
Have Information?
Any information, no matter how small, could be crucial to solving this case.
Phone: 5616883000
You can remain anonymous