- 11 - At Dawn in Rivendell, the third album of Tolkien Ensemble is released (it was recorded in the previous year). It features recitations by Christopher Lee.
- 23 - The Lord of the Rings: The Two Towers wins two Oscars, out of six nominations, at the 75th Academy Awards.
- 25 - The first Tolkien Reading Day
- 1 - J.R.R. Tolkien: His Life and Works is published.
- 15 - The Art of The Two Towers is published.
- 30 - J.R.R. Tolkien: A Biography (Greenwood Biographies) by Leslie Ellen Jones is published.
- 5 - Andy Serkis wins an MTV Movie Award, category "Best Animated Character", for his role as Gollum. His immortal acceptance speech would win a Hugo in 2004.
- 15 - Philip Stone, who voiced Théoden in The Lord of the Rings (1978 film), dies.
- 16 - British Writers: Classics, Volume II is published.
- 30 - The Lord of the Rings Strategy Battle Game: Shadow and Flame is published.
- 4 - The Lord of the Rings and Philosophy: One Book to Rule Them All is published.
- 18-21 - Oxonmoot 2003.
- 22 - The Eleventy-First Birthday Party is held in Frankenmuth, Michigan.
- ? - The Origins of Tolkien's Middle-earth For Dummies is published.
- 1 - The Gospel According to Tolkien is published.
- ? - Tolkien and C.S. Lewis: The Gift of Friendship is published.
- 4 - The Essential J.R.R. Tolkien Sourcebook is published.
- 4 - The Lord of the Rings: War of the Ring is released in the US.
- 10 - Secret Fire: The Spiritual Vision of J.R.R. Tolkien is published.
- 14 - Tolkien Through Russian Eyes is published.
- 18 - The Lord of the Rings: The Two Towers Extended Edition is released on DVD.
- 25 - The Lord of the Rings: The Return of the King - Original Motion Picture Soundtrack is released.
- 26 - Gordon Reid, who provided several voices in The Lord of the Rings radio series, dies.
- ? - Vinyar Tengwar 45 is published.
- 1 - The Lord of the Rings: The Return of the King premieres in Embassy Theatre of New Zealand.
- 1 - Gollum: How We Made Movie Magic is published.
- 1 - Tolkien: A Cultural Phenomenon is published.
- 3 - Actor David Hemmings dies.
- 17 - The Lord of the Rings: The Return of the King is released in USA.
- 17 - Actor Alan Tilvern dies.
- 18 - The Lord of the Rings: The Return of the King is released in New Zealand.
- 23 - Parma Eldalamberon 14 is published.
- ? - Tolkien in Translation is published.
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