John W. Mahaney

John William Michael Mahaney passed away peacefully on August 7, 2024 in Land O' Lakes, Florida.
John was born in Riverdale, Maryland, the beloved son of John and Louise Mahaney.
John attended DeMatha High School before joining the Metropolitan Police Department of Washington, D.C., as a cadet. His dedication and bravery were quickly recognized, earning him many commendations. Throughout his distinguished 23 + year career, he served in several key roles, including being one of the youngest detectives in the Intelligence Division.
His final and perhaps most impactful role was with the Special Operations Division Harbor Unit, where he served as a Rescue Diver and Instructor for boat operations. During his time with the Harbor Unit, John performed over 40 emergency dives, including 14 solo missions.
Beyond his professional accomplishments, John continued to serve his community in Benedict, Maryland, running Gold Coast Charters from Benedict and Breezy Point, Maryland in his fishing boat "WHY BE NORMAL." He also founded TowBoatU.S. Cobb Island, with his son-in-law, Chappie.
Later, upon retiring to Florida with the love of his life Patricia, John founded and operated a data recovery business.
John's sharp and mischievous wit, straightforward honesty, logical approach to life, and willingness to help others will be deeply missed. A hero to many, John loved life and his family.
John was preceded in death by his parents.
He is survived by his devoted wife, Patricia, his daughters Julie (Chappie) and Tracy (Kelly), and his son Patrick. John was a proud father and a grandfather to four grandchildren, Joey, Luke (Alyssa), Nick (Savannah), and Mackenzie, and was further blessed with six great-grandchildren: Katarina, Wyatt, Roman, Paisleigh, Delaney, and Levi.
A private service will be held by the family.
In lieu of flowers, the family requests donations to be made to (Visit or call (718) 987-1931 to donate) – or any charity of your choice – in honor of John Mahaney.