A Lover's Oath is a lost 1925 American silent fantasy film directed by Ferdinand P. Earle, jun.

The film is based upon the Rubaiyat of Omar Khayyam, as translated by Edward Fitzgerald, and included quotes of its text on intertitles.

Published details of this film resemble those of Omar Khayyam, screened in Australia in 1923 to positive reviews.

Desperate times for the young couple follow, but in the end they are united and made happy.

For its 1925 release by Astor Pictures, a small distributor, Milton Sills edited the 1922 film to emphasize the role of Novarro, who by then was a rising star.