 | Elijah Wood als Frodo Baggins |
 | Sean Astin als Samwise Gamgee |
 | Andy Serkis als Gollum / Smeagol |
 | Viggo Mortensen als Aragorn |
 | Ian McKellen als Gandalf |
 | Bernard Hill als Théoden |
 | Dominic Monaghan als Meriadoc 'Merry' Brandybuck |
 | Billy Boyd als Peregrin 'Pippin' Took |
 | John Rhys-Davies als Gimli / Treebeard (voice) |
 | Orlando Bloom als Legolas |
 | Christopher Lee als Saruman |
 | Miranda Otto als Éowyn |
 | David Wenham als Faramir |
 | Brad Dourif als Gríma |
 | Karl Urban als Éomer |
 | Liv Tyler als Arwen |
 | Cate Blanchett als Galadriel |
 | Hugo Weaving als Elrond |
 | Craig Parker als Haldir |
 | Bruce Allpress als Aldor |
 | John Bach als Madril |
 | Sala Baker als Man Flesh Uruk |
 | Jed Brophy als Sharku / Snaga |
 | Sam Comery als Eothain |
 | Calum Gittins als Haleth |
 | Phil Grieve als Hero Orc |
 | Bruce Hopkins als Gamling |
 | Paris Howe Strewe als Théodred |
 | Nathaniel Lees als Ugluk |
 | John Leigh als Háma |
 | Robbie Magasiva als Mauhúr |
 | Robyn Malcolm als Morwen |
 | Bruce Phillips als Rohan Soldier |
 | Robert Pollock als Mordor Orc |
 | Olivia Tennet als Freda |
 | Raymond Trickitt als Bereg |
 | Stephen Ure als Grishnakh |
 | Billy Jackson als Cute Rohan Refugee Child |
 | Katie Jackson als Cute Rohan Refugee Child |
 | Sean Bean als Boromir (uncredited) |
 | John Noble als Denethor (uncredited) |
| Victoria Beynon-Cole als Hero Orc (uncredited) |
 | Lee Hartley als Hero Orc (uncredited) |
| Frazer Anderson als Orc / Ranger (uncredited) |
 | Ben Barrington als Gondorian Soldier / Ranger / Orc (uncredited) |
| Jarl Benzon als Elf Warrior / Rohan Stable Boy (uncredited) |
| Jørn Benzon als Orolonn (uncredited) |
 | Owen Black als Rivendell Elf (uncredited) |
| Dorothy Anne Bonner als Rohan Woman (uncredited) |
| Ben Britton als Fereveldir (uncredited) |
| Riley Brophy als Rohan Refugee Child (uncredited) |
 | Alistair Browning als Damrod (uncredited) |
| Alix Bushnell als Rohan Refugee (uncredited) |
| Sean Button als Uruk-hai (uncredited) |
| Ryan Carey als Uruk-hai (uncredited) |
| Rodney Cook als Uruk-hai (uncredited) |
 | Augie Davis als Uruk-hai (uncredited) |
 | Mana Hira Davis als Gondorian Soldier / Harad Warrior / Orc / Rohan Soldier / Uruk-hai (uncredited) |
 | Shane Dawson als Harad Warrior / Uruk-hai (uncredited) |
 | Karlos Drinkwater als Easterling Warrior (uncredited) |
 | Aron Eastwood als Rohan Soldier (uncredited) |
 | Frank Edwards als Rohan Man (uncredited) |
| Clint Elvy als Harad Warrior (uncredited) |
| Alexia Fairbrother als Elf Warrior (uncredited) |
 | Daniel Falconer als Elf Warrior / Rivendell Elf (uncredited) |
 | Siaosi Fonua als Orc / Uruk-hai (uncredited) |
| Kester Fordham als Anglor (uncredited) |
| Michael Fowler als Elf (uncredited) |
 | Ben Fransham als Anendel / Thandronen (uncredited) |
| Frank Goldingham als Rohan Refugee (uncredited) |
 | Winham Hammond als Uruk-hai (uncredited) |
| Jonathan Harding als Elf Warrior (uncredited) |
| Lucas Hayward als Rohan Boy (uncredited) |
 | Dan Hennah als Rohan Recruit (uncredited) |
 | Jason Hood als Théoden's Royal Guard (uncredited) |
| Lani Jackson als Uruk-hai (uncredited) |
 | Peter Jackson als Spear-Throwing Rohan Soldier (uncredited) |
| Gareth Jensen als Elf Warrior (uncredited) |
| Sam Kelly als Elf Warrior / Uruk-hai (uncredited) |
 | Richard Knowles als Rohan Soldier (uncredited) |
 | Sandro Kopp als Elven Warrior (uncredited) |
| Sam La Hood als Orc Pitmaster (uncredited) |
| Don Langridge als Rohan Guard (uncredited) |
 | Michael Lawrence als Wildman (uncredited) |
 | Alan Lee als Rohan Recruit (uncredited) |
| Jono Manks als Twilight Ringwraith (archive footage) (uncredited) |
 | Brent McIntyre als Witch-king (archive footage) (uncredited) |
 | Dra McKay als Rohan Woman (uncredited) |
 | Joseph Mika-Hunt als Uruk-hai / Gondorian Soldier (uncredited) |
| Dean Morganty als Haradrim Warrior / Ranger / Uruk-hai (uncredited) |
 | Henry Mortensen als Rohan Boy Recruit (uncredited) |
 | Francis Mountjoy als Elf / Gondorian Soldier / Orc / Uruk-hai (uncredited) |
 | Paul Norell als Easterling (uncredited) |
 | Barrie M. Osborne als Rock-throwing Rohan Soldier (uncredited) |
 | Allan Poppleton als Uruk-hai (uncredited) |
 | Gareth Reeves als Fighting Elf (uncredited) |
| Miranda Rivers als Rohan Refugee (uncredited) |
 | Campbell Rousselle als Tree-cutting Orc (uncredited) |
 | Matthew J. Saville als Gondorian Soldier (uncredited) |
 | Samuel E. Shore als Rohan Refugee / Elf (uncredited) |
 | Allan Smith als Dead Marshes Elf (uncredited) |
| Greg Tozer als Conscripting Rohan Soldier (uncredited) |
 | Piripi Waretini als Uruk-hai Warrior (uncredited) |
 | Tim Wong als Uruk-hai (uncredited) |
 | John Wraight als Stable Hand (uncredited) |
 | Kelley Kerr Young als Rohan Refugee (uncredited) |
 | Robert Young als Uruk-hai (uncredited) |
| Harvey Weinstein | Executive Producer |
| Mark Robins | Art Direction |
| Liz Mullane | Casting |
| Michael Lynne | Executive Producer |
| John Howe | Set Decoration |
| Grant Major | Production Design |
| Howard Shore | Original Music Composer |
| Mark Ordesky | Executive Producer |
| Victoria Burrows | Casting |
| Bob Weinstein | Executive Producer |
| Rob Outterside | Art Direction |
| Peter Jackson | Producer |
| Alan Lee | Set Decoration |
| Richard Taylor | Costume Design |
| Philip Ivey | Art Direction |
| Dan Hennah | Set Decoration |
| Andrew Lesnie | Director of Photography |
| Joe Bleakley | Art Direction |
| Michael Horton | Editor |
| Ngila Dickson | Costume Design |
| Barrie M. Osborne | Producer |
| John Hubbard | Casting |
| Ann Robinson | Casting |
| Amy Hubbard | Casting |
| Sean Button | Stunts |
| Roger Huynh | Compositors |
| Shane Prigmore | Animation |
| Guy Williams | 3D Supervisor |
| Christian Rivers | Visual Effects Designer |
| Sala Baker | Stunts |
| Mike Hopkins | Supervising Sound Editor |
| Ethan van der Ryn | Supervising Sound Editor |
| Jules Cook | Assistant Art Director |
| Jim Rygiel | Visual Effects Supervisor |
| Hammond Peek | Production Sound Mixer |
| Alan Lee | Conceptual Design |
| Gary Summers | Additional Sound Re-Recording Mixer |
| Ken Saville | Sound Recordist |
| Laurelle Ziento | Makeup Artist |
| Robyn Isaacs | Visual Effects Producer |
| Craig Tomlinson | Sound Effects Editor |
| David Farmer | Sound Designer |
| Gail Wilson | Makeup Artist |
| John McKay | Sound Effects Editor |
| Davina Lamont | Makeup Artist |
| Michael Semanick | Sound Re-Recording Mixer |
| Margaret Aston | Makeup Artist |
| Dan Hennah | Supervising Art Director |
| Jim Berney | Visual Effects Supervisor |
| Steve Hopgood | Makeup Artist |
| Allie Rutherford | Makeup Artist |
| Noreen Wilkie | Makeup Artist |
| Dean Wright | Visual Effects Producer |
| Michael Hedges | Sound Re-Recording Mixer |
| Paul Lasaine | Visual Effects Art Director |
| Charlie McClellan | Visual Effects Producer |
| Joe Letteri | Visual Effects Supervisor |
| Kyrsten Mate | Sound Effects Editor |
| Brent Burge | Sound Effects Editor |
| Rick Findlater | Makeup Artist |
| Janine Schneider | Makeup Artist |
| Hayden Collow | Sound Effects Editor |
| Catherine Maguire | Makeup Artist |
| Angela Mooar | Makeup Artist |
| Jacqui Allen | Assistant Art Director |
| Ross McGarva | Assistant Art Director |
| Christopher Boyes | Sound Re-Recording Mixer |
| Lenore Stewart | Makeup Artist |
| Tanya Travis | Makeup Artist |
| Nancy Hennah | Makeup Artist |
| Eileen Moran | Visual Effects Producer |
| Emma Moncrieff | Makeup Artist |
| Jeremy Bennett | Visual Effects Art Director |
| Kerryn Flewell-Smith | Makeup Artist |
| Jeremy Woodhead | Makeup Artist |
| Samantha Morley | Set Costumer |
| Vivienne MacGillicuddy | Makeup Artist |
| John Clinton | Visual Effects Producer |
| Dave Whitehead | Sound Effects Editor |
| Malcolm Cromie | Sound Recordist |
| John Howe | Conceptual Design |
| Mark Kinaston-Smith | Makeup Artist |
| Dean Lyon | Visual Effects Supervisor |
| Tera Treanor | Makeup Artist |
| Jabez Olssen | Additional Editor |
| Fran Walsh | Producer |
| Robert Shaye | Executive Producer |
| Randall William Cook | Animation Supervisor |
| Alex Funke | Visual Effects Director |
| Stephen Sinclair | Screenplay |
| Peter Jackson | Screenplay |
| Fran Walsh | Screenplay |
| J.R.R. Tolkien | Novel |
| Peter Jackson | Director |
| Philippa Boyens | Screenplay |
| Jamie Beswarick | Sculptor |
| Daniel Falconer | Sculptor |
| Rick Porras | Co-Producer |
| Victoria Mielewska | Dialect Coach |
| Roisin Carty | Dialect Coach |
| Andrew Jack | Dialect Coach |
| Craig Clarke | Compositing Supervisor |
| Casey O'Neill | Stunts |
| Jamie Selkirk | Co-Producer |
| Richard Taylor | Makeup Supervisor |
| Peter Owen | Makeup Designer |
| Peter Swords King | Makeup Designer |
| George Marshall Ruge | Stunt Coordinator |
| Daniel W. Barringer | Stunt Coordinator |
| Steve Ingram | Special Effects Coordinator |
| Jamie Selkirk | Supervising Editor |
| Fabian Sanjurjo | Sound Editor |
| Katy Wood | Foley Editor |
| Mike Jones | Foley Editor |
| Peter Mills | Assistant Sound Editor |
| Matt Stutter | Assistant Sound Editor |
| Grant Johnson | Assistant Sound Editor |
| Jo Mion | Assistant Sound Editor |
| Phil Heywood | Foley Artist |
| Paul Huntingford | Foley Artist |
| Narelle Ahrens | Foley Artist |
| Martin Oswin | Foley Recording Engineer |
| Robyn McFarlane | Foley Recording Engineer |
| Mark Stetson | Visual Effects |
| Geoff Dixon | Visual Effects Supervisor |
| Michael Lloyd | Visual Effects Supervisor |
