Alfred L. Werker (December 2, 1896 – July 28, 1975) was a film director whose work in movies spanned from 1917 through 1957.

Lost Boundaries, inspired by a true story of a Black doctor passing as white, has grown in critical consensus.

During the early 1940s, he directed a number of comedies including Laurel & Hardy's A-Haunting We Will Go (1942).

Notable films from that period include the unique mystery thriller Repeat Performance (1947) and He Walked by Night (1948).

The following year, Werker was nominated for, but did not win, the Directors Guild of America Outstanding Directorial Achievement in Motion Pictures for Lost Boundaries (1949).