The Diana Chronicles is a 2007 British biographical book by Tina Brown that chronicles the life and death of Diana, Princess of Wales. The book's release coincided with the increased attention Diana had received leading up to the tenth anniversary of her death in 1997. Brown writes in a preface: The biography was based on over 250 interviews with men and women – members of Diana's intimate circle, associates in her public life and partners in her philanthropy.

Of the conspiracy theories surrounding the death of Diana in 1997, Brown surveys the evidence extensively and concludes "In any sequence of events of such complexity, speed, and drama, there are bound to be confusions and discrepancies. But the evidence is overwhelming that this was a traffic accident – period."

More than 250 witnesses came forward in the British Coroner's Inquests into the deaths of Diana and Dodi Fayed in 2007. After reporting and analyzing the evidence, the paperback edition of The Diana Chronicles carries an Afterword in which the author concludes: "The [inquests] were not so much an inquiry as an exorcism of every lie and myth surrounding the way the Princess died."

The Diana Chronicles was at number one on The New York Times Best Seller list for hardback nonfiction for the week of 8 to 15 July 2007.

According to Christopher Hitchens author of God Is Not Great:

Tina Brown has produced something that is, as well as absorbing and stirring, witty and penetrating.

According to Simon Schama author of A History of Britain:

Nothing comes close to Tina Brown's book for its tight grip on the dark human comedy that was Diana's life and death. The result is a compulsively page-turning trip to the poisoned place where class met glamour and result was catastrophe.