The Handmaid's Tale, by Margaret Atwood: Like 1984, The Handmaid's Tale is the story of an imagined and terrifying future. Atwood takes a feminist perspective on the type of dystopia that many authors before and after Orwell have imagined.
Brave New World, by Aldous Huxley: Published in 1932, Brave New World is an early example of the dystopia, and is often credited as one of Orwell's inspirations.
The Iron Heel, by Jack London: London's dystopian novel, published in 1908, is often considered the "grandfather" of the genre.
Animal Farm, by George Orwell: Orwell's most successful novel before 1984 is an allegorical story of the Russian Revolution told through farm animals.
The Road to...