| Movie | 1981 | Raiders of the Lost Ark | Sallah | |
| Movie | 1989 | Indiana Jones and the Last Crusade | Sallah | |
| Movie | 2001 | The Lord of the Rings: The Fellowship of the Ring | Gimli | |
| Movie | 2002 | The Lord of the Rings: The Two Towers | Gimli / Treebeard (voice) | |
| Movie | 2003 | The Lord of the Rings: The Return of the King | Gimli | |
| Movie | 1987 | The Living Daylights | General Leonid Pushkin | |
| Movie | 2013 | Scooby-Doo! Adventures: The Mystery Map | Gnarlybeard (voice) | |
| Movie | 2003 | Never Say Never Mind | | |
| Movie | 2007 | In the Name of the King: A Dungeon Siege Tale | Merick | |
| Movie | 2003 | The Medallion | Cmdr. Hammerstock-Smythe | |
| Movie | 1993 | South Beach | | |
| Movie | 1994 | The High Crusade | Bruder Parvus | |
| Movie | 1992 | The Lost World | Challanger | |
| Movie | 2004 | The Princess Diaries 2: Royal Engagement | Viscount Mabrey | |
| Movie | 2004 | Dragon Storm | King Fastrad | |
| Movie | 1996 | The Great White Hype | Johnny Windsor | |
| Movie | 2002 | Scorcher | Dr. Matthew Sallin | |
| Movie | 1984 | Sword of the Valiant: The Legend of Sir Gawain and the Green Knight | Baron Fortinbras | |
| Movie | 2003 | Coronado | Presidente Hugo Luis Ramos | |
| Movie | 1996 | Boo to You Too! Winnie the Pooh | Narrator (voice) | |
| Movie | 1989 | The Trial of the Incredible Hulk | Wilson Fisk | |
| Movie | 2005 | Chupacabra Terror | Captain Randolph | |
| Movie | 1982 | Victor/Victoria | Andre Cassell | |
| Movie | 1995 | Glory Daze | Luther | |
| Movie | 2004 | The Privileged Planet | Narrator | |
| Movie | 2005 | The King Maker | Phillippe | |
| Movie | 1985 | King Solomon's Mines | Dogati | |
| Movie | 1986 | Firewalker | Corky Taylor | |
| Movie | 1991 | Journey of Honor | El Zaidan | |
| Movie | 1975 | The Naked Civil Servant | Barndoor | |
| Movie | 1988 | Waxwork | Werewolf | |
| Movie | 1992 | The Unnamable II: The Statement of Randolph Carter | Professor Warren | |
| Movie | 1996 | Bloodsport III | Jacques Duvalier | |
| Movie | 1986 | In the Shadow of Kilimanjaro | Chris Tucker | |
| Movie | 1999 | Secret of the Andes | Father Claver | |
| Movie | 2008 | Anaconda 3: Offspring | Peter "J.D." Murdoch | |
| Movie | 2006 | One Night with the King | Mordecai | |
| Movie | 2011 | Ferocious Planet | Senator Jackson Crenshaw | |
| Movie | 2020 | Grizzly II: Revenge | Bouchard | |
| Movie | 2008 | Fire and Ice: The Dragon Chronicles | Sangimel | |
| Movie | 1981 | Sphinx | Stephanos Markoulis | |
| Movie | 1994 | A Flintstones Christmas Carol | Charles Brickens (voice) | |
| Movie | 1982 | Ivanhoe | Front de Boeuf | |
| Movie | 2008 | Kiss Me Deadly | Yale Ericson | |
| Movie | 2007 | The Ferryman | The Greek | |
| Movie | 1983 | Sahara | Rasoul | |
| Movie | 1999 | Au Pair | Nigel Kent | |
| Movie | 1992 | Return to the Lost World | Professor George Challenger | |
| Movie | 2009 | Anacondas: Trail of Blood | Peter "J.D." Murdoch | |
| Movie | 2006 | Shark Bait | Thorton (voice) | |
| Movie | 1972 | The Incredible Robert Baldick: Never Come Night | Caleb Selling | |
| Movie | 2008 | The Search for the Ark of the Covenant | Narrator | |
| Movie | 2003 | The Search for the Real Mt. Sinai | Narrator | |
| Movie | 2010 | Medium Raw | Elliot Carbon | |
| Movie | 2010 | Three Wise Women | Green | |
| Movie | 2011 | Return to the Hiding Place | Eusi | |
| Movie | 1994 | Blood of the Innocent | Shmuda | |
| Movie | 1993 | Cyborg Cop | Kessel | |
| Movie | 1993 | The Magic Paintbrush | Zagal (voice) | |
| Movie | 2024 | The Gates | Frederick Ladbroke | |
| Movie | 2009 | Reclaiming the Blade | Narrator (voice) | |
| Movie | 2002 | Sabretooth | Anthony Bricklin | |
| Movie | 2000 | Britannic | Captain Barrett | |
| Movie | 2009 | 31 North 62 East | John Hammond | |
| Movie | 1984 | Best Revenge | Mustapha | |
| Movie | 2000 | Sinbad: Beyond the Veil of Mists | King Akron | |
| Movie | 1976 | Beasts: During Barty's Party | Peter Newell | |
| Movie | 2012 | Escape | Malcom Andrews | |
| Movie | 1993 | The Seventh Coin | Captain Galil | |
| Movie | 1984 | Kim | Babu | |
| Movie | 1992 | Canvas | Nick | |
| Movie | 2004 | 12 Days of Terror | Captain | |
| Movie | 1994 | Robot in the Family | Eli Taki / Rashmud / Sashri | |
| Movie | 2000 | Delta Force One: The Lost Patrol | Ivan | |
| Movie | 2002 | Endangered Species | Police Lt. Wyznowski | |
| Movie | 2013 | 100 Degrees Below Zero | Ralph Dillard | |
| Movie | 1989 | Rising Storm | Donwaldo | |
| Movie | 2023 | The Making of Indiana Jones and the Dial of Destiny | Self | |
| Movie | 2003 | Film Collectibles: Capturing Movie Memories | Self | |
| Movie | 1996 | Marquis de Sade | Inspector Marais | |
| Movie | 2013 | Concrete Blondes | Kostas Jakobatos | |
| Movie | 2003 | Beyond the Movie: The Return of the King | Self / Narrator | |
| Movie | 1988 | Tusks | Roger Singh | |
| Movie | 1987 | Perry Mason: The Case of the Murdered Madam | Edward Tremaine | |
| Movie | 2013 | Prisoners of the Sun | Professor Hayden Masterton | |
| Movie | 1992 | Perry Mason: The Case of the Fatal Framing | Phillip Graff | |
| Movie | 1988 | Young Toscanini | Rossi | |
| Movie | 2014 | Apocalypse Pompeii | Colonel Carlos Dillard | |
| Movie | 2022 | Kingslayer | Guillaume Maréchal | |
| Movie | 2011 | Treasure Hunters | | |
| Movie | 2014 | Under Milk Wood | Voice | |
| Movie | 2014 | Time Lapse | Mr. Bezzeredes | |
| Movie | 2003 | The Jungle Book 2 | Ranjan's Father (voice) | |
| Movie | 2013 | Smokin' | Doctor | |
| Movie | 1978 | The Nativity | Nestor | |
| Movie | 2007 | The Legend of Sasquatch | Ranger Steve | |
| Movie | 2014 | Saul: The Journey to Damascus | Caiphas | |
| Movie | 2023 | Aquaman and the Lost Kingdom | Brine King (voice) | |
| Movie | 2023 | Indiana Jones and the Dial of Destiny | Sallah | |
| Movie | N/A | The Sword of Thyrus | King Athol | |
| Movie | 2015 | Beyond the Mask | Charles Kemp | |
| Movie | 2014 | Let The Season In | Self / Narrator | |
| Movie | 1991 | Before the Storm | Flynn | |
| Movie | 1984 | No Man's Land | Grimshaw | |
| Movie | 2015 | Raiders!: The Story of the Greatest Fan Film Ever Made | Self | |
| Movie | 2015 | Killing Jesus | Annas | |
| Movie | 2001 | Beyond the Movie: The Fellowship of the Ring | Narrator (voice) | |
| Movie | 2015 | The Watchmaker's Apprentice | Narrator | |
| Movie | 1988 | Higher Ground | | |
| Movie | 2018 | Fragments of Truth | Narrator (voice) | |
| Movie | 2023 | Timeless Heroes: Indiana Jones & Harrison Ford | Self | |
| Movie | 1989 | The Gifted One | Carl Boardman | |
| Movie | N/A | Nameless | Barnaby | |
| Movie | 2016 | The Blue Mauritius | Hanson | |
| Movie | 1991 | The Strauss Dynasty | Gribov | |
| Movie | 1978 | Fearless Frank | | |
| Movie | 1981 | The Making of 'Raiders of the Lost Ark' | Self | |
| Movie | 2015 | Golden Shoes | Burt | |
| Movie | 1996 | Echo of Blue | | |
| Movie | 2005 | Shadows in the Sun | Mr. Andrew Benton | |
| Movie | 2003 | Justice League: Paradise Lost | Lord Hades (voice) | |
| Movie | 2000 | The Gold Cross | Rodrigues | |
| Movie | 2010 | Tom and Jerry Meet Sherlock Holmes | Dr. Watson (voice) | |
| Movie | 1991 | Under Cover | Flynn | |
| Movie | 2004 | A Filmmaker's Journey: Making 'The Return of the King' | Self | |
| Movie | 1997 | Body Armor | Rasheed | |
| Movie | 1992 | The Double 0 Kid | Rudi Von Kseenbaum | |
| Movie | 1980 | Fox | Warleigh | |
| Movie | 1987 | The Little Match Girl | Chief Murphy | |
| Movie | 2016 | The Apostle Peter: Redemption | Peter | |
| Movie | 1988 | Goddess of Love | Zeus | |
| Movie | 1996 | Catherine the Great | Pugachev | |
| Movie | 2015 | Many Beautiful Things | John Ruskin (voice) | |
| Movie | 1979 | The Danedyke Mystery | Armchair | |
| Movie | 2016 | Camera Store | Pinky Steuben | |
| Movie | 2016 | Winter Thaw | Martin Avdeitch | |
| Movie | 2020 | Valley of the Gods | Dr. Hermann | |
| Movie | 2001 | Quest for the Ring | Self | |
| Movie | 1993 | Sunset Grill | Stockton | |
| Movie | 2001 | A Passage to Middle-Earth: Making of 'Lord of the Rings' | Self | |
| Movie | 2004 | Stars of the Pharaohs | Narrator | |
| Movie | 1980 | A Nightingale Sang In Berkeley Square | Solicitor | |
| Movie | 2018 | Aux | Jack | |
| Movie | 2005 | The Game of Their Lives | Bill Jeffrey | |
| Movie | 1989 | Desperado: Badlands Justice | Richard Marriott | |
| Movie | 1997 | Cats Don't Dance | Woolie Mammoth (voice) | |
| Movie | 2011 | KJB: The Book That Changed the World | Himeself (Narrator) | |
| Movie | 2018 | Aquaman | Brine King (voice) | |
| Movie | 1979 | Henry VIII | Capucius, Ambassador from Emperor Charles V | |
| Movie | 1973 | Penny Gold | Rugby Player | |
| Movie | 2017 | I Am Israel | Narrator | |
| Movie | 1980 | The Merchant of Venice | Salerio | |
| Movie | 2019 | The Pilgrim's Progress | Evangelist (voice) | |
| Movie | 2003 | The Making of 20,000 Leagues Under The Sea | Narrator (voice) | |
| Movie | 2019 | Mosley | Warnie (voice) | |
| Movie | 2019 | Santa Fake | Jow | |
| Movie | 1990 | Secret Weapon | Mossad Chief | |
| Movie | 1981 | The Island of Adventure | Smith | |
| Movie | 2012 | Missing Christmas | Narrator / Santa (voice) | |
| Movie | 2020 | Moments in Spacetime | Mason | |
| Movie | 2020 | I Am Patrick: The Patron Saint of Ireland | | |
| Movie | 2025 | Starbright | Raphael | |
| Movie | 2003 | The Making of Shōgun | | |
| Movie | 2020 | Tainted | Vladimir | |
| Movie | 1992 | The Making of Aladdin: A Whole New World | Host | |
| Movie | 2020 | G-Loc | Henry | |
| Movie | 2005 | Ringers: Lord of the Fans | Self | |
| Movie | 2005 | The Lost Angel | Father Kevin | |
| Movie | 2004 | Vlad | Narrator | |
| Movie | 2020 | Shadowtown | Einar | |
| Movie | 2021 | Silent Night: A Song for the World | Douglas Haig | |
| Movie | 2021 | Bad Cupid | Archie | |
| Movie | 1984 | Nairobi Affair | Simon | |
| Movie | 2002 | The Making of The Fellowship of the Ring | Self | |
| Movie | 2021 | Indiana Jones: The Search for the Lost Golden Age | Self - Actor (archive footage) | |
| Movie | 2004 | Catching Kringle | Santa | |
| Movie | 2003 | Indiana Jones: Making the Trilogy | self | |
| Movie | N/A | DragonMan: The Adventures of Luke Starr | Jarred Starr | |
| Movie | 2003 | The Making of The Two Towers | | |
| Movie | 2004 | The Making of the Return of the King | Self | |
| Movie | N/A | The Way of the Wind | Uriah the Chief Elder | |
| Movie | N/A | Bone Keeper | | |
| Movie | N/A | Overhill Manor | | |
| Movie | 1996 | Aladdin and the King of Thieves | Cassim (voice) | |
| TV Show | 1984 | Murder, She Wrote | Harry Waverly | 1 |
| TV Show | 1994 | Duckman | The Sultan of Dendron (voice) | 1 |
| TV Show | 1977 | CHiPs | Nakura (as John Rhys Davies) | 1 |
| TV Show | 1996 | Arliss | | 1 |
| TV Show | 1991 | The Legend of Prince Valiant | | 1 |
| TV Show | 2000 | The Secret Adventures of Jules Verne | | 2 |
| TV Show | 2002 | Fillmore! | | 1 |
| TV Show | 1995 | Sliders | Maximillian Arturo | 47 |
| TV Show | 1995 | Pinky and the Brain | | 1 |
| TV Show | 1995 | Star Trek: Voyager | Leonardo da Vinci | 2 |
| TV Show | 1994 | Gargoyles | Macbeth/Demona's Second (voice) | 4 |
| TV Show | 1962 | Z-Cars | | 1 |
| TV Show | 1989 | Tales from the Crypt | Duval | 1 |
| TV Show | 1983 | Scarecrow and Mrs. King | | 1 |
| TV Show | 2004 | Super Robot Monkey Team Hyperforce Go! | | 1 |
| TV Show | 1975 | The Sweeney | Ron Brett | 1 |
| TV Show | 1994 | Fantastic Four | Thor (voice) | 2 |
| TV Show | 1979 | Question Time | Self - Panellist | 1 |
| TV Show | 1984 | Robin of Sherwood | | 1 |
| TV Show | 1976 | I, Claudius | | 2 |
| TV Show | 1955 | Dixon of Dock Green | Dunlop | 1 |
| TV Show | 2003 | Helen of Troy | King Priam of Troy | 2 |
| TV Show | 1972 | The Adventures of Black Beauty | Alfred Kidney | 1 |
| TV Show | 1997 | You Wish | Mustafa | 13 |
| TV Show | 1976 | Beasts | Peter Newell | 1 |
| TV Show | 2016 | The Shannara Chronicles | Eventine | 8 |
| TV Show | 1994 | A Mind to Kill | | 1 |
| TV Show | 1978 | Hazell | | 1 |
| TV Show | 1993 | The Untouchables | Michael Malone | 42 |
| TV Show | 1991 | Under Cover | Flynn | 14 |
| TV Show | 1977 | 1990 | | 1 |
| TV Show | 1973 | Warship | | 1 |
| TV Show | 1988 | Noble House | Quillan Gornt | 4 |
| TV Show | 1980 | Shōgun | Vasco Rodrigues | 5 |
| TV Show | 1971 | The Guardians | | 1 |
| TV Show | 1974 | Within These Walls | | 1 |
| TV Show | 1975 | Quiller | Leindorf | 1 |
| TV Show | 2009 | Krod Mandoon and the Flaming Sword of Fire | | 3 |
| TV Show | 1992 | Batman: The Animated Series | 'Baron' Waclaw Jozek (voice) | 1 |
| TV Show | 1988 | War and Remembrance | Sammy Mutterperl | 12 |
| TV Show | 1996 | Mortal Kombat: Defenders of the Realm | Asgarth (voice) | 1 |
| TV Show | 2001 | Justice League | Lord Hades (voice) | 2 |
| TV Show | 2006 | Psych | Curator | 1 |
| TV Show | 2011 | Once Upon a Time | Grand Pabbie (voice) | 3 |
| TV Show | 2012 | Metal Hurlant Chronicles | L'alchimiste | 1 |
| TV Show | 1984 | Murder, She Wrote | Lancaster | 1 |
| TV Show | 1984 | Murder, She Wrote | Harry Mordecai | 1 |
| TV Show | 1999 | SpongeBob SquarePants | Man Ray (voice) | 2 |
| TV Show | 2020 | Josh Gates Tonight | Self | 1 |
| TV Show | N/A | Lantern City | Desmond Wilhorn | 0 |
| TV Show | 1991 | Archaeology | Host | 15 |
| TV Show | 1995 | Freakazoid! | Professor Beasthead (voice) | 1 |
| TV Show | 1991 | I Misteri Della Giungla Nera | O'Connor | 5 |
| TV Show | 2015 | Harvey Beaks | Elder Bug (voice) | 1 |
| TV Show | 2010 | Fish Hooks | Magic Apple (voice) | 1 |
| TV Show | 1993 | Peak Practice | Mike King | 1 |
| TV Show | 1994 | Aaahh!!! Real Monsters | Head Judge / Zifdo (voice) | 1 |
| TV Show | 2013 | Die schlechtesten Filme aller Zeiten | Bouchard (archive footage) | 1 |
| TV Show | 2005 | Revelations | Professor Lampley | 6 |
| TV Show | 1983 | Sadat | Gamal Abdel Nasser | 2 |
| TV Show | 1999 | Mickey Mouse Works | Oberon (voice) | 1 |
| TV Show | 1991 | The Strauss Dynasty | Gribov | 6 |
| TV Show | 1989 | Great Expectations | Joe Gargery | 6 |
| TV Show | 1976 | I, Claudius | Naevius Sutorius Macro | 12 |
| TV Show | 2004 | The Lady Musketeer | Porthos | 2 |
| TV Show | N/A | Legends of Ileydria | Narrator | 1 |
| TV Show | 2015 | Documentary Now! | Garth Davies-Gruffudd | 1 |
| TV Show | 2011 | Face Off | Self - Guest Judge | 1 |
| TV Show | 2001 | The Zeta Project | Edgar Mandragora (voice) | 1 |
| TV Show | 1993 | Animaniacs | Tympannini (voice) | 1 |
| TV Show | 1981 | Peter and Paul | Silas | 2 |
| TV Show | 2015 | The Adventures of Puss in Boots | Goodsword (voice) | 1 |
| TV Show | 2008 | Legend of the Seeker | Horace | 1 |
| TV Show | 2020 | Reunited Apart | Self | 1 |
| TV Show | 1992 | Ring of the Musketeers | Maruice Treville | 4 |
| TV Show | 2020 | Wizards: Tales of Arcadia | Galahad (voice) | 10 |
| TV Show | 1983 | Reilly: Ace of Spies | Tanyatos | 1 |
| TV Show | 1978 | Enemy at the Door | George Trenett | 1 |
| TV Show | 2001 | Disney's House of Mouse | Oberon (voice) | 1 |
| TV Show | 2012 | Honest Trailers | Voice of the Brine King (archive footage) | 1 |
| TV Show | 1971 | Budgie | Laughing Spam Fritter | 4 |
| TV Show | 1994 | Gargoyles | Findlaech (voice) | 1 |
| TV Show | 1994 | Gargoyles | Macbeth (voice) | 8 |
| TV Show | 1994 | Gargoyles | Arthur Morwood-Smyth (voice) | 1 |
| TV Show | 1977 | BBC2 Play of the Week | Guy de Maupassant | 1 |
| TV Show | 1977 | Target | Hecht | 1 |
| TV Show | 1974 | Zodiac | Aikman | 1 |
| TV Show | 2013 | Rick and Morty | BugAnne's Father (voice) | 1 |
