If I Did IT

If I Did It is a book by O. J. Simpson, in which he puts forth a hypothetical description of the murders of Nicole Brown Simpson and Ronald Goldman. Simpson was tried and acquitted of the murders in a criminal trial (People v. Simpson) but later found financially liable in a civil trial. Although the original release of the book was canceled shortly after it was announced in November 2006, 400,000 physical copies of the original book were printed, and by June 2007, copies of the book had leaked online.

The book was originally due to be published by Regan Books, an imprint of HarperCollins, which was headed by editor and publisher Judith Regan. It was originally planned that the book would be promoted via a television special featuring an interview with Simpson on Fox Broadcasting Company. Fox and HarperCollins are both owned by the News Corporation. This special had the longer title, O. J. Simpson: If I Did It, Here's How It Happened. Like the original release of the book, the special was canceled.

In August 2007, a Florida bankruptcy court awarded the rights to the book to the Goldman family to partially satisfy the civil judgment. The title of the book was changed to If I Did It: Confessions of the Killer, and published by Beaufort Books. Comments were added to the original manuscript by the Goldman family, the book's ghostwriter Pablo Fenjves, and journalist Dominick Dunne. The new cover design printed the word "If" greatly reduced in size compared with the other words, and placed it inside the "I"; a person glancing at the cover only briefly may have the impression that it is entitled I Did It. In this new form, the book was published in September 2007.