| Around the World in 80 Days | 1956 | Bombay Police Inspector | Movie |
| Playhouse 90 | 1956 | George White / Dean | TV Show |
| Telephone Time | 1956 | Gov. William Cosby | TV Show |
| Tales of the 77th Bengal Lancers | 1956 | Sir Bertram Cecil | TV Show |
| General Electric Summer Originals | 1956 | George 'The Professor' Thayer | TV Show |
| Escape to Burma | 1955 | Commissioner | Movie |
| Jane Wyman Presents The Fireside Theatre | 1955 | Thompson | TV Show |
| Matinee Theatre | 1955 | | TV Show |
| Camera Three | 1955 | | TV Show |
| The Eddie Cantor Comedy Theater | 1955 | | TV Show |
| The Joseph Cotten Show: On Trial | 1955 | Admirer | TV Show |
| Climax! | 1954 | Ronnie Pond | TV Show |
| Sabaka | 1954 | Sir Cedric | Movie |
| World for Ransom | 1954 | Major Ian Bone | Movie |
| Passport to Danger | 1954 | | TV Show |
| The Whistler | 1954 | Carrington | TV Show |
| Abbott and Costello Meet Dr. Jekyll and Mr. Hyde | 1953 | Inspector | Movie |
| Private Secretary | 1953 | | TV Show |
| Topper | 1953 | Albert | TV Show |
| Fort Vengeance | 1953 | Inspector Trevett | Movie |
| Cavalcade of America | 1952 | Gen. Prescott / Col. Patterson | TV Show |
| The Ford Television Theatre | 1952 | Roger Peabody | TV Show |
| My Hero | 1952 | Reginald Denny | TV Show |
| The Red Skelton Hour | 1951 | Reggie the Butler / Explorer Brewster / Cruise Passenger / ... | TV Show |
| Personal Appearance Theater | 1951 | | TV Show |
| The Colgate Comedy Hour | 1950 | Lord Henry Delves | TV Show |
| The George Burns and Gracie Allen Show | 1950 | Mr. Petrie | TV Show |
| The Iroquois Trail | 1950 | Capt. Edward Brownell | Movie |
| Hollywood Theatre Time | 1950 | | TV Show |
| Fireside Theatre | 1949 | | TV Show |
| Your Show Time | 1949 | | TV Show |
| Mr. Blandings Builds His Dream House | 1948 | Simms | Movie |
| Christmas Eve | 1947 | Phillip Hastings | Movie |
| Escape Me Never | 1947 | Mr. MacLean | Movie |
| My Favorite Brunette | 1947 | James Collins | Movie |
| The Macomber Affair | 1947 | Police Inspector | Movie |
| The Secret Life of Walter Mitty | 1947 | Colonel | Movie |
| The Locket | 1946 | Mr. Wendell | Movie |
| Tangier | 1946 | Fernandez | Movie |
| Love Letters | 1945 | Defense Counsel Phillips | Movie |
| Song of the Open Road | 1944 | Director Curtis | Movie |
| The Crime Doctor's Strangest Case | 1943 | Paul Ashley | Movie |
| Captains of the Clouds | 1942 | Commanding Officer | Movie |
| Eyes in the Night | 1942 | Stephen Lawry | Movie |
| Sherlock Holmes and the Voice of Terror | 1942 | Sir Evan Barham | Movie |
| Thunder Birds [Soldiers of the Air] | 1942 | Barrett | Movie |
| Over My Dead Body | 1942 | Richard 'Dick' Brenner | Movie |
| International Squadron | 1941 | Wing Commander Severn | Movie |
| Appointment for Love | 1941 | Michael Dailey | Movie |
| One Night in Lisbon | 1941 | Erich Strasser | Movie |
| Rebecca | 1940 | Frank Crawley | Movie |
| Seven Sinners | 1940 | Capt. Church | Movie |
| Spring Parade | 1940 | The Major | Movie |
| Bulldog Drummond's Bride | 1939 | Algy Longworth | Movie |
| Bulldog Drummond's Secret Police | 1939 | Algy Longworth | Movie |
| Everybody's Baby | 1939 | Dr. Pilcoff | Movie |
| Blockade | 1938 | Edward Grant | Movie |
| Bulldog Drummond in Africa | 1938 | Algy Longworth | Movie |
| Bulldog Drummond's Peril | 1938 | Algy Longworth | Movie |
| Four Men and a Prayer | 1938 | Capt. Douglas Loveland | Movie |
| Arrest Bulldog Drummond | 1938 | Algy Longworth | Movie |
| Bulldog Drummond Comes Back | 1937 | Algy Longworth | Movie |
| Bulldog Drummond Escapes | 1937 | Algy Langworth | Movie |
| Bulldog Drummond's Revenge | 1937 | Algy Longworth | Movie |
| Beg, Borrow or Steal | 1937 | Clifton Summitt | Movie |
| Join the Marines | 1937 | Steve Lodge | Movie |
| Jungle Menace | 1937 | Ralph Marshall [Chs.1-3 | Movie |
| Let's Get Married | 1937 | George Willoughby | Movie |
| The Great Gambini | 1937 | William Randall | Movie |
| Sunday Night at the Trocadero | 1937 | Reginald Denny - Master of Ceremonies | Short Film |
| Women of Glamour | 1937 | Fritz 'Frederick' Eagan | Movie |
| More Than a Secretary | 1936 | Bill Houston | Movie |
| Romeo and Juliet | 1936 | Benvolio - Nephew to Montgue and Friend to Romeo | Movie |
| It Couldn't Have Happened - But It Did | 1936 | Greg Stone | Movie |
| Two in a Crowd | 1936 | James Stewart Anthony | Movie |
| We're in the Legion Now | 1936 | Dan Linton | Movie |
| The Preview Murder Mystery | 1936 | Johnny Morgan | Movie |
| Anna Karenina | 1935 | Yashvin | Movie |
| No More Ladies | 1935 | Oliver | Movie |
| Remember Last Night? | 1935 | Jake Whitridge | Movie |
| Midnight Phantom | 1935 | Prof. David Graham | Movie |
| Lottery Lover | 1935 | Capt. Payne | Movie |
| Vagabond Lady | 1935 | John 'Johnny' Spear | Movie |
| Here's to Romance | 1935 | Emery Gerard | Movie |
| The Lady in Scarlet | 1935 | Oliver Keith | Movie |
| Without Children | 1935 | Phil Graham | Movie |
| Of Human Bondage | 1934 | Griffiths | Movie |
| The Little Minister | 1934 | Captain Halliwell | Movie |
| The Lost Patrol | 1934 | Brown | Movie |
| The Richest Girl in the World | 1934 | Phillip Lockwood | Movie |
| The World Moves On | 1934 | Erik von Gerhardt | Movie |
| Dancing Man | 1934 | Paul Drexel | Movie |
| One More River | 1934 | David Dornford | Movie |
| We're Rich Again | 1934 | Bookie Wells | Movie |
| Only Yesterday | 1933 | Bob | Movie |
| The Barbarian | 1933 | Gerald Hume | Movie |
| Hamlet, Act I: Scenes IV and V | 1933 | Horatio | Short Film |
| The Big Bluff | 1933 | | Movie |
| The Iron Master | 1933 | Steve Mason | Movie |
| Fog | 1933 | Dr. Winstay | Movie |
| Strange Justice | 1932 | Henry I. Judson | Movie |
| Kiki | 1931 | Victor Randall | Movie |
| Parlor, Bedroom and Bath | 1931 | Jeffrey Haywood | Movie |
| Private Lives | 1931 | Victor | Movie |
| The Christmas Party | 1931 | Reginald Denny (uncredited) | Short Film |
| Stepping Out | 1931 | Tom Martin | Movie |
| Madam Satan | 1930 | Bob Brooks | Movie |
| A Lady's Morals | 1930 | Paul Brandt | Movie |
| Oh, for a Man! | 1930 | Barney McGann | Movie |
| Those Three French Girls | 1930 | Larry | Movie |
| Embarrassing Moments | 1930 | Thaddeus Cruikshank | Movie |
| What a Man | 1930 | Wade Rawlins | Movie |
| Clear the Decks | 1929 | Jack Armitage | Movie |
| His Lucky Day | 1929 | Charles Blaydon | Movie |
| One Hysterical Night | 1929 | William 'Napoleon' Judd | Movie |
| Good Morning, Judge | 1928 | Freddie Grey | Movie |
| The Night Bird | 1928 | Kid Davis | Movie |
| Red Hot Speed | 1928 | Darrow | Movie |
| Fast and Furious | 1927 | Tom Brown | Movie |
| On Your Toes | 1927 | Elliott Beresford | Movie |
| Out All Night | 1927 | John Graham | Movie |
| That's My Daddy | 1927 | James 'Jimmy' Norton | Movie |
| Skinner's Dress Suit | 1926 | Skinner | Movie |
| What Happened to Jones? | 1926 | Tom Jones | Movie |
| Rolling Home | 1926 | Nat Alden | Movie |
| Take It from Me | 1926 | Tom Eggett | Movie |
| The Cheerful Fraud | 1926 | Sir Michael Fairlie | Movie |
| I'll Show You the Town | 1925 | Alec Dupree | Movie |
| California Straight Ahead | 1925 | Tom Hayden | Movie |
| Oh, Doctor! | 1925 | Rufus Billop | Movie |
| Where Was I? | 1925 | Thomas S. Berford | Movie |
| Captain Fearless | 1925 | | Movie |
| The Fast Worker | 1924 | Terry Brock | Movie |
| The Reckless Age | 1924 | Dick Minot | Movie |
| Sporting Youth | 1924 | Jimmy Wood | Movie |
| Abysmal Brute | 1923 | Pat Glendon, Jr | Movie |
| The Thrill Chaser | 1923 | Reginald Denny | Movie |
| Columbia, the Gem, and the Ocean | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Don Coyote | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Joan of Newark | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Something for Nothing | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Strike Father, Strike Son | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Barnaby's Grudge | 1923 | Kane Halliday / Kid Roberts | Short Film |
| The Wandering Two | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Widower's Mite, The | 1923 | Kane Halliday / Kid Roberts | Short Film |
| The Chickasha Bone Crusher | 1923 | Kane Halliday / Kid Roberts | Short Film |
| When Kane Met Abel | 1923 | Kane Halliday / Kid Roberts | Short Film |
| Sherlock Holmes | 1922 | Prince Alexis | Movie |
| The Kentucky Derby | 1922 | Donald Gordon | Movie |
| The Leather Pushers | 1922 | Kane Halliday / Kid Roberts | Movie |
| Jaws of Steel, The | 1922 | Cpl. Haldene, N.W.M.P. | Short Film |
| Never Let Go | 1922 | Campbell - the Mountie | Short Film |
| Plain Grit | 1922 | Sergeant Frank Evans | Short Film |
| Whipsawed | 1922 | Kane Halliday / Kid Roberts | Short Film |
| Young King Cole | 1922 | Kane Halliday / Kid Roberts | Short Film |
| A Fool and His Money | 1922 | Kane Halliday / Kid Roberts | Short Film |
| Let's Go | 1922 | Kane Halliday / 'Kid' Roberts | Short Film |
| Payment Through the Nose | 1922 | Kane Halliday / Kid Roberts | Short Film |
| Round Two | 1922 | Kane 'Kid Roberts' Halliday | Short Film |
| Taming of the Shrewd, The | 1922 | Kane Halliday / Kid Roberts | Short Film |
| He Raised Kane | 1922 | Kane Halliday / Kid Roberts | Short Film |
| Experience | 1921 | | Movie |
| The Beggar Maid | 1921 | The Earl of Winston / King Cophetua | Short Film |
| Disraeli | 1921 | Charles, Viscount Deeford | Movie |
| Footlights | 1921 | Brett Page | Movie |
| The Iron Trail | 1921 | Dan Appleton | Movie |
| Paying the Piper | 1921 | Keith Larne | Movie |
| The Price of Possession | 1921 | Robert Dawnay | Movie |
| Tropical Love | 1921 | The Drifter | Movie |
| A Dark Lantern | 1920 | Prince Anton | Movie |
| 39 East | 1920 | Napolean Gibbs Jr. | Movie |
| The Oakdale Affair | 1919 | Arthur Stockbridge | Movie |
| Bringing Up Betty | 1919 | Tom Waring | Movie |
| Melting Pot, The | 1915 | Undetermined Role (uncredited) | Movie |
| Niobe | 1915 | Cornelius Griffin (as Leigh Denny) | Movie |
| Alias Mike Hercules | | George 'The Professor' Thayer | TV Show |
