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 50 silent films Ford directed between 1917 and 1928. It starred Margaret Mann, James Hall, and Charles Morton. The film is also notable for the presence of the young John Wayne in an uncredited role as an officer. Though "silent," it was released with a Movietone music and sound effects track.