Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch is a 1990 novel written as a collaboration between the English authors Terry Pratchett and Neil Gaiman, who in turn were dubbed "Double Trouble" by the British press.

Sir Terence David John Pratchett was an English author, humorist, and satirist, best known for his 41 comic fantasy novels set on the Discworld, and for the apocalyptic comedy novel Good Omens (1990) which he wrote with Neil Gaiman.