Wilmuth John Merkyl was an American opera singer, as well as stage and screen actor. He appeared in films from 1915 to 1945. After 1917 he was sometimes credited as John Merkyl.
| Movie | The Pride of the Yankees | Spectator (uncredited) | 1942-07-14 |
| Movie | Gentleman Jim | Headwaiter (uncredited) | 1942-11-14 |
| Movie | Andy Hardy Meets Debutante | Prentiss (uncredited) | 1940-07-05 |
| Movie | Atlantic Adventure | Headwaiter (uncredited) | 1935-08-25 |
| Movie | The Merry Widow | Escort (uncredited) | 1934-11-02 |
| Movie | The Unholy Three | Jeweler (uncredited) | 1925-07-20 |
| Movie | Fine Clothes | Receiver | 1925-08-09 |
| Movie | Captain January | Herbert Morton | 1924-07-06 |
| Movie | The Whispered Name | Craig Stephenson | 1924-01-21 |
| Movie | Suspicion | Leonard White | 1918-01-01 |
| Movie | Let's Get a Divorce | Calvignac (as Wilmuth Merkyl) | 1918-04-28 |
| Movie | The Burden of Proof | Robert Ames | 1918-09-21 |
| Movie | Fedora | Count Vladimir Androvitch | 1918-08-04 |
| Movie | A Man's World | David Powell | 1918-06-24 |
| Movie | The Soul Market | Jack Dexter (as Wilmuth Merkyl) | 1916-03-12 |
| Movie | Her Surrender | Webster Stuyvesant | 1916-10-01 |
| Movie | The Celebrated Scandal | Ernesto (as Wilmuth Merkyl) | 1915-03-01 |
| Movie | Gretna Green | Earl of Basset | 1915-03-15 |
| Movie | Niobe | Tompkins (as Wilmuth Merkyl) | 1915-04-04 |
| Movie | The Price | The Artist | 1915-10-04 |
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