Jayson Thomas Blair (born March 23, 1976) is an American former journalist who worked for The New York Times. He resigned from the newspaper in May 2003 in the wake of the discovery of fabrication and plagiarism in his stories.
 Blair published a memoir of this period, titled Burning Down My Masters' House (2004), recounting his career, a diagnosis of bipolar disorder after his resignation, and his view of race relations at the newspaper. He later established a support group for people with bipolar disorder and became a life coach.
 Blair was born in Columbia, Maryland, the son of a federal executive and a schoolteacher. While attending the University of Maryland, College Park, he was a student journalist. For the 1996–1997 academic year, he was selected as the second African-American editor-in-chief of its student newspaper, The Diamondback. According to a 2004 article by the Baltimore Sun, "some of his fellow students opposed his selection describing him as 'an elbows-out competitor.'"
 After a summer interning at The New York Times in 1998, Blair was offered an extended internship there. He declined in order to complete more coursework for graduation, but returned to the Times in June 1999 with a year of coursework left to complete. That November, he was classified as an "intermediate reporter". He was later promoted to a full reporter and then to editor.
 On April 28, 2003, Blair received a call from Times national editor James Roberts asking him about similarities between a story he had written two days earlier and one published April 18 by San Antonio Express-News reporter Macarena Hernandez. The senior editor of the Express-News had contacted the Times about the similarities between Blair's article in the Times and Hernandez's article in his paper.
 The resulting inquiry led to the discovery of fabrication and plagiarism in a number of articles written by Blair. Some fabrications include Blair's claims to have traveled to the city mentioned in the dateline, when in fact he did not.
 Questionable articles include the following:
 After internal investigations, The New York Times reported on Blair's journalistic misdeeds in an "unprecedented" 7,239-word front-page story on May 11, 2003, headlined "Times Reporter Who Resigned Leaves Long Trail of Deception." The story called the affair "a low point in the 152-year history of the newspaper."
 After the scandal broke, some 30 former staffers of The Diamondback, who had worked with Blair when he was editor-in-chief at the university newspaper, signed a 2003 letter alleging that Blair had made four serious errors as a reporter and editor while at the University of Maryland. They said these and his work habits brought his integrity into question. The letter-signers alleged that questions raised by some of these staffers at the time were ignored by Maryland Media, Inc. (MMI), the board that owned the paper.
 The investigation, known as the Siegal committee, found heated debate among the staff over affirmative action hiring, as Blair is black. Jonathan Landman, Blair's editor, told the Siegal committee he felt that Blair's being black played a large part in the younger man's initial promotion in 2001 to full-time staffer. "I think race was the decisive factor in his promotion," he said. "I thought then and I think now that it was the wrong decision."
 Others disagreed. Five days later, New York Times op-ed columnist Bob Herbert, an African American, asserted in his column that race had nothing to do with the Blair case:
 Listen up: the race issue in this case is as bogus as some of Jayson Blair's reporting... [F]olks who delight in attacking anything black, or anything designed to help blacks, have pounced on the Blair story as evidence that there is something inherently wrong with The New York Times's effort to diversify its newsroom, and beyond that, with the very idea of a commitment to diversity or affirmative action anywhere. And while these agitators won't admit it, the nasty subtext to their attack is that there is something inherently wrong with blacks. Executive editor Howell Raines and managing editor Gerald Boyd resigned after losing newsroom support in the aftermath of the scandal.
 After resigning from the Times, Blair struggled with severe depression and, according to his memoir, entered a hospital for treatment. He was diagnosed with bipolar disorder for the first time. He has acknowledged that he had been self-medicating when he was dealing with substance abuse of alcohol and cocaine in earlier years.
 Blair later returned to college to complete his postponed degree.
 The year after he left the Times, Blair wrote a memoir, Burning Down My Master's House, published by New Millennium Books in 2004. Its initial print run was 250,000 copies; some 1,400 were sold in its first nine days. Although most reviews were critical, sales of the book increased after Blair was interviewed by Larry King and Fox News Channel host Bill O'Reilly.
 In his book, Blair revealed extended substance abuse, which he had ended before he resigned from the newspaper, and a struggle with bipolar disorder, which was diagnosed and first treated after he resigned. He also discussed journalistic practices at the Times, and his view of race relations and disagreements among senior editors at the newspaper.
 In 2006, Blair was running a support group for people with bipolar disorder, for which he has received continuing treatment.
In 2007 he became a life coach, working in Virginia, opening his own coaching center five years later. He was still working in this field in 2016.