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| Title | Year | Status | Character |
|---|
| Footlights | 1921 | Brett Page |
| Disraeli | 1921 | Charles, Viscount Deeford |
| Experience | 1921 |
| The Price of Possession | 1921 | Robert Dawnay |
| Paying the Piper | 1921 | Keith Larne |
| 39 East | 1920 | Napolean Gibbs Jr. |
| A Dark Lantern | 1920 | Prince Anton |
| The Oakdale Affair | 1919 | Arthur Stockbridge |
| Bringing Up Betty | 1919 | Tom Waring |
| The Red Lantern | 1919 |
| The Melting Pot | 1915 | Undetermined Role (uncredited) |
| Niobe | 1915 | Cornelius Griffin (as Leigh Denny) |
| Batman: The Movie | 1966 | Commodore Schmidlapp |
| Assault on a Queen | 1966 | Master-at-Arms |
| Batman | 1966 | TV Series | King Boris |
| Please Don't Eat the Daisies | 1965 | TV Series | George |
| Cat Ballou | 1965 | Sir Harry Percival |
| Bob Hope Presents the Chrysler Theatre | 1964 | TV Series | Mr. Beauford |
| Adventures in Paradise | 1961-1962 | TV Series | Stewart / Winston Harrow |
| The Phantom | 1961 | TV Movie | Commissioner R.G. Mallory |
| The DuPont Show of the Month | 1960 | TV Series | Chauvelin |
| Dow Hour of Great Mysteries | 1960 | TV Series | Inspector Ireland |
| Playhouse 90 | 1957 | TV Series | George White / Dean |
| The Red Skelton Hour | 1955-1957 | TV Series | Reggie the Butler / Explorer / Cruise Passenger / ... |
| The Joseph Cotten Show: On Trial | 1957 | TV Series | Admirer |
| Tales of the 77th Bengal Lancers | 1957 | TV Series | Sir Bertram Cecil |
| Around the World in Eighty Days | 1956 | Bombay Police Inspector |
| Matinee Theatre | 1956 | TV Series |
| Passport to Danger | 1956 | TV Series |
| Alias Mike Hercules | 1956 | TV Series | George 'The Professor' Thayer |
| General Electric Summer Originals | 1956 | TV Series | George 'The Professor' Thayer |
| Telephone Time | 1956 | TV Series | Gov. William Cosby |
| Climax! | 1956 | TV Series | Ronnie Pond |
| Jane Wyman Presents The Fireside Theatre | 1955 | TV Series | Thompson |
| Topper | 1955 | TV Series | Albert |
| Private Secretary | 1955 | TV Series |
| The Colgate Comedy Hour | 1955 | TV Series | Lord Henry Delves |
| Escape to Burma | 1955 | Commissioner |
| The Whistler | 1955 | TV Series | Carrington |
| The Eddie Cantor Comedy Theater | 1955 | TV Series |
| Sabaka | 1954 | Sir Cedric |
| The Ford Television Theatre | 1954 | TV Series | Roger Peabody |
| World for Ransom | 1954 | Maj. Ian Bone |
| The George Burns and Gracie Allen Show | 1954 | TV Series | Mr. Petrie |
| Cavalcade of America | 1952-1953 | TV Series | Gen. Prescott / Col. Patterson |
| Abbott and Costello Meet Dr. Jekyll and Mr. Hyde | 1953 | Inspector |
| Fireside Theatre | 1953 | TV Series |
| Fort Vengeance | 1953 | Inspector Trevett |
| My Hero | 1952 | TV Series | Reginald Denny |
| Hollywood Theatre Time | 1951 | TV Series |
| The Iroquois Trail | 1950 | Capt. Edward Brownell |
| Your Show Time | 1949 | TV Series |
| Mr. Blandings Builds His Dream House | 1948 | Simms |
| Escape Me Never | 1947 | Mr. MacLean |
| Christmas Eve | 1947 | Phillip Hastings |
| The Secret Life of Walter Mitty | 1947 | Colonel |
| The Macomber Affair | 1947 | Police Inspector |
| My Favorite Brunette | 1947 | James Collins |
| The Locket | 1946 | Mr. Wendell |
| Tangier | 1946 | Fernandez |
| Love Letters | 1945 | Defense Counsel Phillips |
| Song of the Open Road | 1944 | Director Curtis |
| The Crime Doctor's Strangest Case | 1943 | Paul Ashley |
| Over My Dead Body | 1942 | Richard 'Dick' Brenner |
| Thunder Birds: Soldiers of the Air | 1942 | Barrett |
| Eyes in the Night | 1942 | Stephen Lawry |
| Sherlock Holmes and the Voice of Terror | 1942 | Sir Evan Barham |
| Captains of the Clouds | 1942 | Commanding Officer |
| Appointment for Love | 1941 | Michael Dailey |
| International Squadron | 1941 | Wing Commander Severn |
| One Night in Lisbon | 1941 | Erich Strasser |
| Seven Sinners | 1940 | Captain Church |
| Spring Parade | 1940 | The Major |
| Rebecca | 1940 | Frank Crawley |
| Bulldog Drummond's Bride | 1939 | Algy Longworth |
| Bulldog Drummond's Secret Police | 1939 | Algy Longworth |
| Everybody's Baby | 1939 | Dr. Pilcoff |
| Arrest Bulldog Drummond | 1938 | Algy Longworth |
| Bulldog Drummond in Africa | 1938 | Algy Longworth |
| Blockade | 1938 | Edward Grant |
| Four Men and a Prayer | 1938 | Capt. Douglas Loveland |
| Bulldog Drummond's Peril | 1938 | Algy Longworth |
| Bulldog Drummond's Revenge | 1937 | Algy Longworth |
| Beg, Borrow or Steal | 1937 | Clifton Summitt |
| Sunday Night at the Trocadero | 1937 | Short | Reginald Denny - Master of Ceremonies |
| Bulldog Drummond Comes Back | 1937 | Algy Longworth |
| Jungle Menace | 1937 | Ralph Marshall [Chs.1-3] |
| The Great Gambini | 1937 | William Randall |
| Let's Get Married | 1937 | George Willoughby |
| Women of Glamour | 1937 | Fritz 'Frederick' Eagan |
| Join the Marines | 1937 | Steve Lodge |
| Bulldog Drummond Escapes | 1937 | Algy Langworth |
| We're in the Legion Now | 1936 | Dan Linton |
| More Than a Secretary | 1936 | Bill Houston |
| Two in a Crowd | 1936 | James Stewart Anthony |
| Romeo and Juliet | 1936 | Benvolio - Nephew to Montgue and Friend to Romeo |
| It Couldn't Have Happened (But It Did) | 1936 | Greg Stone |
| The Preview Murder Mystery | 1936 | Johnny Morgan |
| Midnight Phantom | 1935 | Prof. David Graham |
| Remember Last Night? | 1935 | Jake Whitridge |
| The Lady in Scarlet | 1935 | Oliver Keith |
| Anna Karenina | 1935 | Yashvin |
| Here's to Romance | 1935 | Emery Gerard |
| No More Ladies | 1935 | Oliver |
| Vagabond Lady | 1935 | John 'Johnny' Spear |
| Without Children | 1935 | Phil Graham |
| The Lottery Lover | 1935 | Capt. Payne |
| The Little Minister | 1934 | Captain Halliwell |
| The Richest Girl in the World | 1934 | Phillip Lockwood |
| One More River | 1934 | David Dornford |
| We're Rich Again | 1934 | Bookington 'Bookie' Wells |
| Of Human Bondage | 1934 | Harry Griffiths |
| The World Moves On | 1934 | Erik von Gerhardt |
| Dancing Man | 1934 | Paul Drexel |
| The Lost Patrol | 1934 | Brown |
| Hamlet, Act I: Scenes IV and V | 1933 | Short | Horatio |
| Fog | 1933 | Dr. Winstay |
| Only Yesterday | 1933 | Bob |
| The Big Bluff | 1933 |
| The Barbarian | 1933 | Gerald Hume |
| The Iron Master | 1933 | Steve Mason |
| Strange Justice | 1932 | Judson |
| Private Lives | 1931 | Victor |
| The Christmas Party | 1931 | Short | Reginald Denny (uncredited) |
| Stepping Out | 1931 | Tom Martin |
| Kiki | 1931 | Victor Randall |
| Parlor, Bedroom and Bath | 1931 | Jeffrey Haywood |
| Oh, for a Man! | 1930 | Barney McGann |
| A Lady's Morals | 1930 | Paul Brandt |
| Those Three French Girls | 1930 | Larry |
| Madam Satan | 1930 | Bob Brooks |
| What a Man | 1930 | Wade Rawlins |
| Embarrassing Moments | 1930 | Thaddeus Cruikshank |
| One Hysterical Night | 1929 | William 'Napoleon' Judd |
| His Lucky Day | 1929 | Charles Blaydon |
| Clear the Decks | 1929 | Jack Armitage |
| Red Hot Speed | 1928 | Darrow |
| The Night Bird | 1928 | Kid Davis |
| Good Morning, Judge | 1928 | Freddie Grey |
| That's My Daddy | 1927 | James 'Jimmy' Norton |
| On Your Toes | 1927 | Elliott Beresford |
| Out All Night | 1927 | John Graham |
| Fast and Furious | 1927 | Tom Brown |
| The Cheerful Fraud | 1926 | Sir Michael Fairlie |
| Take It from Me | 1926 | Tom Eggett |
| Rolling Home | 1926 | Nat Alden |
| Skinner's Dress Suit | 1926 | Skinner |
| What Happened to Jones | 1926 | Tom Jones |
| California Straight Ahead | 1925 | Tom Hayden |
| Where Was I? | 1925 | Thomas S. Berford |
| I'll Show You the Town | 1925 | Alec Dupree |
| Oh, Doctor! | 1925 | Rufus Billings Jr. |
| The Fast Worker | 1924 | Terry Brock |
| The Reckless Age | 1924 | Dick Minot |
| Sporting Youth | 1924 | Jimmy Wood |
| The Thrill Chaser | 1923 | Cameo appearance |
| Barnaby's Grudge | 1923 | Short | Kane Halliday
Kid Roberts |
| Columbia, the Gem, and the Ocean | 1923 | Short | Kane Halliday
Kid Roberts |
| Something for Nothing | 1923 | Short | Kane Halliday
Kid Roberts |
| Don Coyote | 1923 | Short | Kane Halliday
Kid Roberts |
| The Widower's Mite | 1923 | Short | Kane Halliday
Kid Roberts |
| The Wandering Two | 1923 | Short | Kane Halliday
Kid Roberts |
| Abysmal Brute | 1923 | Pat Glendon, Jr |
| Joan of Newark | 1923 | Short | Kane Halliday
Kid Roberts |
| Strike Father, Strike Son | 1923 | Short | Kane Halliday
Kid Roberts |
| When Kane Met Abel | 1923 | Short | Kane Halliday
Kid Roberts |
| The Chickasha Bone Crusher | 1923 | Short | Kane Halliday
Kid Roberts |
| He Raised Kane | 1922 | Short | Kane Halliday
Kid Roberts |
| Young King Cole | 1922 | Short | Kane Halliday
Kid Roberts |
| The Kentucky Derby | 1922 | Donald Gordon |
| Plain Grit | 1922 | Short |
| The Jaws of Steel | 1922 | Short | Cpl. Haldene, N.W.M.P. |
| Never Let Go | 1922 | Short | Campbell - the Mountie |
| Whipsawed | 1922 | Short | Kane Halliday
Kid Roberts |
| The Taming of the Shrewd | 1922 | Short | Kane Halliday
Kid Roberts |
| A Fool and His Money | 1922 | Short | Kane Halliday
Kid Roberts |
| The Leather Pushers | 1922 | Kane Halliday
Kid Roberts |
| Payment Through the Nose | 1922 | Short | Kane Halliday
Kid Roberts |
| Sherlock Holmes | 1922 | Prince Alexis |
| Round Two | 1922 | Short | Kane 'Kid Roberts' Halliday |
| The Iron Trail | 1921 | Dan Appleton |
| Tropical Love | 1921 | The Drifter |
| The Beggar Maid | 1921 | Short | The Earl of Winston / King Cophetua |