Four Sons is a 1928 silent drama film directed and produced by John Ford and written for the screen by Philip Klein from a story by I. A. R. Wylie first published in the Saturday Evening Post as "Grandmother Bernle Learns Her Letters" (1926). It is one of only a handful of survivors out of the more than fifty silent films that Ford directed between 1917 and 1928. It starred Margaret Mann, James Hall, and Charles Morton.