John Mulrooney, Comedian and Late Night Host Dies at 67: Death Cause Not Revealed

The comedy world is mourning the sudden passing of John Mulrooney. He was a versatile stand-up comedian and television host who was a fixture of late-night TV and radio for decades. Mulrooney passed away on December 29, 2025, at his home in Coxsackie, New York, at the age of 67. His family confirmed the news, sparking a wave of tributes from fellow comedians and fans who remember him for his sharp wit and high-energy performances.

John was more than just a funny man on stage; he was a pioneer in the early days of Fox’s late-night programming. Best known for hosting Comic Strip Live and stepping in as a guest host on The Late Show, he was a natural performer who could win over any audience with his quick improvisation.

John Mulrooney's Cause of Death

RIP John Mulrooney, Comedian, Host & Actor
Comedy Tonight, The Late Show on Fox, Hollywood Squares, The Pat Sajak Show, Midtown North, Andrew Dice Clay's Valentine's Day Massacre
Competed on Star Search
2x N.Y.S.B. Award for Best On-Air Personality#InMemoriam #RIP pic.twitter.com/iKdDYwBzM4

— LegacyTributes (@InMemoriamX) January 1, 2026

As of early January 2026, the official cause of death has not been revealed. Reports indicate that his passing was "sudden" and occurred at his residence. What has made the news particularly shocking for the community is that Mulrooney had been active and performing just weeks prior.

He recently appeared at a benefit comedy show in Albany in early December, where colleagues described him as being in great spirits and "sharp as ever." Because he had no public history of major health struggles, the abrupt nature of his death has led to widespread speculation, though the family has requested privacy as they navigate this difficult time.

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John Mulrooney's Career Defined by Laughter and Service

John Mulrooney’s journey started in Brooklyn, and he quickly rose through the ranks of legendary clubs like The Improv and The Laugh Factory. His career was a masterclass in versatility:

• Late-Night Pioneer: He was the man Fox turned to when they needed a strong, reliable host for Comic Strip Live.
• Radio Powerhouse: He dominated the airwaves in New York and Albany, even beating The Howard Stern Show in local ratings at one point.
• A Second Calling: In a unique twist, Mulrooney spent over a decade serving as a police officer (2010–2024), often using his comedic talents to host fundraisers for first responders.

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Conclusion

John Mulrooney was a "comedian’s comedian", a man who lived to make people laugh and spent his later years serving his community. While the lack of a revealed cause of death leaves fans with many questions, his legacy is firmly rooted in the joy he brought to millions. From the bright lights of Hollywood to the local precincts of New York, he proved that a life well-lived is one that leaves others smiling.