The Return of the King is the third and final volume of J. R. R. Tolkien's The Lord of the Rings, following The Fellowship of the Ring and The Two Towers.
Tolkien conceived of The Lord of the Rings as a single volume comprising six "books" plus extensive appendices. The original publisher split the work into three, publishing the fifth and sixth books with the appendices under the title The Return of the King. Tolkien felt the chosen title revealed too much of the story, and indicated he preferred The War of the Ring as a title.
The proposed title for Book V was The War of the Ring. Book VI was to be The End of the Third Age. These titles were used in the Millennium edition.