William Cowper Filmography
- Actor (12 credits)
- Dimples (1916) Her Father
- Emmy of Stork's Nest (1915) Si Stork
- Blown Upon (1915)
- A Domestic Revolution (1915)
- A Yellow Streak (1915) Tobias Rader
- An Enemy to Society (1915) Wulf Axtell
- The Redemption of David Corson (1914) Elder Sprague
- Our Mutual Girl, No. 46 (1914) The Hostess's Uncle
- Our Mutual Girl, No. 44 (1914) Mary's Father
- Our Mutual Girl (1914) Mary's Father (эпизод 44) / The Hostess's Uncle (эпизод 46)
- Mother's Darling Little Boy (1914)
- Gold Is Not All (1913) The Artist
