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Stephen Francis Patrick Aloysius Dunleavy (born 21 January 1938 in Sydney, Australia), is a journalist best known as a columnist for the New York Post. He was a lead reporter on the US tabloid television program A Current Affair in the 1980s and 1990s.
Arriving in New York on New Year's Eve, 1966 with 10 dollars in his pocket, he worked as a correspondent for London newspapers. He joined the New York Post as a news reporter after Rupert Murdoch purchased the newspaper in 1977.
Dunleavy's irreverent shock-jock style was the model for actor Robert Downey, Jr.'s performance as Wayne Gale in Oliver Stone's film Natural Born Killers. Downey spent time with Dunleavy as part of preparing for the role.
"Your dedication to your work, your inspiration to others and loyalty to the paper defies description," Murdoch said as Dunleavy and wife Gloria looked on. "It's exceptional. I've never seen anything like it my whole life." 
Dunleavy controversially wrote a series of articles in defence of Wayne DuMond, a Vietnam veteran who was convicted of rape in Arkansas in 1984, questioning the justice of DuMond's sentence and conviction. DuMond's sentence was eventually reduced to the point where he was paroled; within a year of his release, he went on to rape and murder two women in Missouri. This Willie Horton-like incident resurfaced as a political issue during the 2008 presidential election, since it was Republican candidate Mike Huckabee who secured DuMond's parole while governor of Arkansas.
Beltway Sniper controversy
In his column of October 17, 2002 regarding the Beltway sniper attacks, Dunleavy wrote, “If when the shooter is caught, if he is not a foreigner, I will bare my derriere in Macy’s window.” Although John Lee Malvo and John Allen Muhammad, both of whom were from the United States, were convicted in the case, Dunleavy did not follow through with his pledge.
After a 55-year career, Dunleavy retired with a celebration on 1 October 2008 that was attended by 400 colleagues and friends. Those who honored Dunleavy included News Corp. Chairman and Chief Executive Rupert Murdoch, Post Editor-in-Chief Col Allan, Police Commissioner Ray Kelly, Uniformed Firefighters Association President Steve Cassidy and former A Current Affair host Maury Povich, accompanied by his wife, Connie Chung.
In 1977 Dunleavy, in association with three of Elvis Presley's former bodyguards, published the paperback Elvis: What Happened? (ISBN 978-0345272157) which investigated Presley's life behind the scenes. It was published on August 1, just two weeks before Presley's death on August 16. This was the first book that focused on Presley's addiction to prescription drugs. Following Presley's death in August 1977, the book sold more than 1 million copies.
- Tabloid Baby
- Clemente Lisi A night of pomp-adore: Sendoff for Post's Dunleavy New York Post, 3 October 2008
- Dunleavy's column in the New York Post
- "The King of Sleaze", GQ
- "Hard-Hitting Newsman", Entertainment Weekly, 25 Sep 1992
- Video: Steve Dunleavy journalism master class 1-6