Atticus Finch is a fictional character and the protagonist of Harper Lee's Pulitzer-Prize-winning novel of 1960, To Kill a Mockingbird. A preliminary version of the character also appears in the novel Go Set a Watchman, written in the mid-1950s but not published until 2015. Atticus is a lawyer and resident of the fictional Maycomb County, Alabama, and the father of Jeremy "Jem" Finch and Jean Louise "Scout" Finch. He represents the African-American man Tom Robinson in his trial where he is charged with rape of Mayella Ewell. Lee based the character on her own father, Amasa Coleman Lee, an Alabama lawyer, who, like Atticus, represented black defendants in a highly publicized criminal trial. Book magazine's list of The 100 Best Characters in Fiction Since 1900 names Finch as the seventh best fictional character of 20th-century literature. In 2003, the American Film Institute voted Atticus Finch, as portrayed in an Academy Award-winning performance by Gregory Peck in the 1962 film adaptation, as the greatest hero of all American cinema. In the 2018 Broadway stage play adapted by Aaron Sorkin, Finch has been portrayed by various actors including Jeff Daniels, Ed Harris, Greg Kinnear, Rhys Ifans, and Richard Thomas.

Nelle Harper Lee was an American novelist whose 1960 novel To Kill a Mockingbird won the 1961 Pulitzer Prize and became a classic of modern American literature. She assisted her close friend Truman Capote in his research for the book In Cold Blood (1966). Her second and final novel, Go Set a Watchman, was an earlier draft of Mockingbird that was published in July 2015 as a sequel.