Reparto

• Elijah Wood — Frodo Baggins
• Viggo Mortensen — Aragorn
• Orlando Bloom — Legolas
• Ian McKellen — Gandalf the White
• John Rhys-Davies — Gimli / Treebeard
• Sean Astin — Samwise
• Liv Tyler — Arwen Evenstar
• Dominic Monaghan — Meriadoc
• Billy Boyd — Peregrin
• Andy Serkis — Gollum
• Ian Holm — Bilbo Baggins
• Marton Csokas — Celeborn
• Cate Blanchett — Galadriel
• Hugo Weaving — Elrond
• Bernard Hill — Théoden
• Karl Urban — Éomer
• Miranda Otto — Éowyn
• David Wenham — Faramir
• Sean Bean — Boromir
• John Noble — Denethor
• Alistair Browning — Damrod
• Sarah McLeod — Rosie Cotton
• John Bach — Madril
• Bruce Hopkins — Gamling
• Stephen Ure — Gorbag
• Joel Tobeck — Guritz
• Peter Tait — Shagrat / Corsair of Umbar
• Noel Appleby — Everard Proudfoot
• Bret McKenzie — Figwit
• Todd Rippon — Harad Leader
• Jason Fitch — Uruk
• Robert Pollock — Orc
• Ross Duncan — Orc
• Pete Smith — Orc
• Jed Brophy — Orc
• Billy Jackson — Child
• Bruce Spence — Mouth of Sauron (extended edition)
• Harry Sinclair — Isildur
• David Aston — Gondorian Soldier
• Paul Norell — King of the Dead
• Thomas Robins — Déagol
• Ian Hughes — Irolas
• Alan Howard — The Ring / Sauron
• Sala Baker — Murgash / Sauron
• Lawrence Makoare — Gothmog / Witch-king of Angmar
• Bruce Phillips — Grimbold
• Christopher Lee — Saruman (extended edition)
• Brad Dourif — Gríma Wormtongue (extended edition)