| Tall in the Saddle | 1944 | Harolday (as Don Douglas) | Movie |
| Heavenly Days | 1944 | Dr. George Gallup (as Don Douglas) | Movie |
| Show Business | 1944 | Charlie Lucas (as Don Douglas) | Movie |
| The Falcon Out West | 1944 | Attorney Steven Hayden (as Don Douglas) | Movie |
| Action in the North Atlantic | 1943 | Lieutenant-Commander (uncredited) | Movie |
| Behind the Rising Sun | 1943 | Clancy O'Hara (as Don Douglas) | Movie |
| The Meanest Man in the World | 1943 | Husband | Movie |
| The More the Merrier | 1943 | FBI Agent Harding (as Don Douglas) | Movie |
| Wintertime | 1943 | Jay Rogers (uncredited) | Movie |
| Appointment in Berlin | 1943 | Bill Banning (uncredited) | Movie |
| The Crystal Ball | 1943 | Mr. Bowman (uncredited) | Movie |
| He's My Guy | 1943 | Kirk (as Don Douglas) | Movie |
| Three Cadets | 1943 | Colonel (uncredited) | Short Film |
| Now, Voyager | 1942 | George Weston (uncredited) | Movie |
| Tales of Manhattan | 1942 | 'Hen 'Henderson (Robinson sequence) (as Don Douglas) | Movie |
| Juke Box Jenny | 1942 | Roger Wadsworth (as Don Douglas) | Movie |
| Little Tokyo, U.S.A. | 1942 | Hendricks | Movie |
| On the Sunny Side | 1942 | Mr. George Andrews (as Don Douglas) | Movie |
| The Bugle Sounds | 1942 | Mr. Clyde - FBI Agent (uncredited) | Movie |
| The Daring Young Man | 1942 | Carl Rankin (as Don Douglas) | Movie |
| Don't Talk | 1942 | FBI Agent Jack Sampson (as Don Douglas) | Short Film |
| Andy Hardy's Private Secretary | 1941 | Mr. J.O. Harper (uncredited) | Movie |
| Cheers for Miss Bishop | 1941 | Delbert Thompson | Movie |
| Dead Men Tell | 1941 | Jed Thomasson (as Don Douglas) | Movie |
| Hold Back the Dawn | 1941 | Joe (uncredited) | Movie |
| Murder Among Friends | 1941 | Joe Ellis | Movie |
| The Night of January 16th | 1941 | Attorney Polk | Movie |
| Sergeant York | 1941 | Capt. Tillman (uncredited) | Movie |
| Sleepers West | 1941 | Tom Linscott | Movie |
| Whistling in the Dark | 1941 | Gordon Thomas (as Don Douglas) | Movie |
| A Shot in the Dark | 1941 | Roger Armstrong | Movie |
| The Getaway | 1941 | Jim Duff (as Don Douglas) | Movie |
| Melody Lane | 1941 | J. Roy Thomas | Movie |
| Mercy Island | 1941 | Clay Foster | Movie |
| The Pittsburgh Kid | 1941 | | Movie |
| The Great Swindle | 1941 | Bill Farrow | Movie |
| Charlie Chan in Panama | 1940 | Captain Lewis (as Don Douglas) | Movie |
| Dr. Kildare's Strange Case | 1940 | Mr. Grayson, Patient losing Eye Sight (uncredited) | Movie |
| Edison, the Man | 1940 | Jordan (uncredited) | Movie |
| Flight Command | 1940 | 1st Duty Officer | Movie |
| I Love You Again | 1940 | Herbert | Movie |
| Calling Philo Vance | 1940 | Philip Wrede | Movie |
| Deadwood Dick | 1940 | Dick Stanley - aka Deadwood Dick (as Don Douglas) | Movie |
| Gallant Sons | 1940 | Hackberry | Movie |
| Island of Doomed Men | 1940 | Department of Justice Official (uncredited) | Movie |
| Queen of the Mob | 1940 | Second FBI Director (uncredited) | Movie |
| A Fugitive from Justice | 1940 | Lee Leslie | Movie |
| Fast and Loose | 1939 | Forbes | Movie |
| Jesse James | 1939 | Infantry Captain (uncredited) | Movie |
| Mr. Moto in Danger Island | 1939 | Ship's Officer - Fight Referee (uncredited) | Movie |
| Second Fiddle | 1939 | Film Director (uncredited) | Movie |
| Wings of the Navy | 1939 | Officer of the Day (as Don Douglas) | Movie |
| On Dress Parade | 1939 | Col. Wm. Duncan (as Don Douglas) | Movie |
| Pacific Liner | 1939 | Ship's Officer (uncredited) | Movie |
| Sabotage | 1939 | Joe Grayson | Movie |
| Sergeant Madden | 1939 | Al Boylan, Sr. (scenes deleted) | Movie |
| Smashing the Money Ring | 1939 | Gordon (uncredited) | Movie |
| Stronger Than Desire | 1939 | Mack Clark - Flagg's Investigator (uncredited) | Movie |
| The House of Fear | 1939 | John Woodford | Movie |
| The Man Who Dared | 1939 | Mr. Miller (uncredited) | Movie |
| The Mysterious Miss X | 1939 | Clarence Fredericks (as Don Douglas) | Movie |
| Within the Law | 1939 | Inspector Burke | Movie |
| Fugitive at Large | 1939 | Stevens | Movie |
| The Zero Hour | 1939 | Brewster | Movie |
| Forgotten Victory | 1939 | Mark Carleton | Short Film |
| Alexander's Ragtime Band | 1938 | Singer (scenes deleted) | Movie |
| Test Pilot | 1938 | Pilot in Cafe (uncredited) | Movie |
| The Crowd Roars | 1938 | Murray | Movie |
| The Gladiator | 1938 | Coach Robbins | Movie |
| The Spider's Web | 1938 | Jenkins - the Butler | Movie |
| Convicted | 1938 | District Attorney (as Don Douglas) | Movie |
| Fast Company | 1938 | Lt. James Flanner | Movie |
| Judge Hardy's Children | 1938 | J.J. Harper (uncredited) | Movie |
| Orphans of the Street | 1938 | Colonel Daniels (as Don Douglas) | Movie |
| Smashing the Rackets | 1938 | Harry Spaulding (as Don Douglas) | Movie |
| Come Across | 1938 | Special Agent Thomas | Short Film |
| Law of the Texan | 1938 | Chet Hackett (as Don Douglas) | Movie |
| The Night Hawk | 1938 | Tom Niles (uncredited) | Movie |
| Special Inspector | 1938 | L.L. Williams (as Don Douglas) | Movie |
| Bad Guy | 1937 | Electrical Instructor (uncredited) | Movie |
| Madame X | 1937 | Mr. Edison - Yacht Officer (uncredited) | Movie |
| Navy Blue and Gold | 1937 | Lt. North (uncredited) | Movie |
| Headin' East | 1937 | Eric Ward | Movie |
| The Women Men Marry | 1937 | Auctioneer Mc Vey (uncredited) | Movie |
| Manhattan Shakedown | 1937 | Hadley Brown | Movie |
| Night Life of the Gods | 1935 | Mr. Martin (uncredited) | Movie |
| Love Department, The | 1935 | Gooper Goopalowski (uncredited) | Short Film |
| Men in White | 1934 | Mac | Movie |
| Operator 13 | 1934 | Confederate Officer (uncredited) | Movie |
| Tomorrow's Children | 1934 | Dr. Brooks | Movie |
| Transatlantic Merry-Go-Round | 1934 | Purser (uncredited) | Movie |
| Sequoia | 1934 | Forest Ranger (uncredited) | Movie |
| You Can't Buy Everything | 1934 | Intern at Clinic (uncredited) | Movie |
| Lazy River | 1934 | Officer (uncredited) | Movie |
| A Woman's Man | 1934 | Walter Payson - Horseback Rider | Movie |
| He Couldn't Take It | 1933 | Oakley | Movie |
| Life Begins | 1932 | Medical Student in a Business Suit (uncredited) | Movie |
| A Mail Bride | 1932 | Radio Announcer | Short Film |
| Murder in the Pullman | 1932 | Vincent Lynch | Short Film |
| Ranch House Blues | 1930 | | Short Film |
| The Great Gabbo | 1929 | Frank | Movie |
| Tonight at Twelve | 1929 | Tom Stoddard | Movie |
