Wide Sargasso Sea is a 1966 novel, the most famous by Jean Rhys. It won the prestigious WH Smith Literary Award in 1967, and was the novel to bring her to public attention after decades of obscurity.

The book is a "prequel" to Charlotte Brontë's novel, Jane Eyre, focusing on Rochester's mad wife Bertha, here named Antoinette. A film adaption was released in 1993 starring Karina Lombard .