John Mulrooney, a beloved stand-up comedian, radio personality, and late-night television veteran, died suddenly on December 29, 2025, at the age of 67. According to Albany’s Times Union, he passed away at his home in Coxsackie, New York.

The cause of death has not been disclosed, and friends and colleagues described the loss as completely unexpected, leaving the comedy and entertainment world in shock.

Born and raised in Brooklyn, Mulrooney came up through New York’s fiercely competitive comedy scene in the early 1980s, performing at iconic clubs like Dangerfield’s and Sheepshead Bay. His sharp wit, commanding stage presence, and natural timing quickly set him apart. By the late 1980s, he had become a national presence, performing at The Improv and The Laugh Factory and appearing on shows such as Comic Strip Live, An Evening at the Improv, and Comedy Tonight.

Mulrooney’s versatility extended to television hosting, including a brief but notable stint replacing Joan Rivers on The Late Show in 1987. He also appeared on Star Search, The New Hollywood Squares, and hosted programs like The Pat Sajak Show and Fox’s King of the Mountain. Later, he transitioned seamlessly into radio, becoming a familiar and trusted voice on shows like The John and Abbey Show and Wolf and Mulrooney in the Morning, where his humor and relatability resonated with listeners for years.

Beyond entertainment, Mulrooney dedicated much of his life to public service. From 2010 to 2024, he worked as a police officer while continuing to perform comedy, often entertaining at fundraisers for police and fire departments nationwide. His rare ability to balance law enforcement with a demanding performance career earned him deep respect, particularly among first responders, whom he supported with humor, empathy, and firsthand understanding.

Tributes poured in following his death, with fellow comedians and friends remembering both his talent and generosity. Adam Sandler recalled how Mulrooney could “destroy a room,” while Steven Van Zandt reflected on how sudden the loss felt. Mulrooney is remembered not only for his laughter, but for his warmth, loyalty, and service. His voice, stories, and spirit endure through the countless lives he touched, leaving behind a legacy defined by humor, humanity, and heart.