The Sap is a 1929 American sound part-talkie comedy film directed by Archie Mayo and written by De Leon Anthony and Robert Lord.

In addition to sequences with audible dialogue or talking sequences, the film features a synchronized musical score and sound effects along with English intertitles.

The film stars Edward Everett Horton, Alan Hale Sr., Patsy Ruth Miller, Russell Simpson, Jerry Mandy and Edna Murphy.

The sap, unemployed and hapless Bill Small, is not regarded by his wife Betty and her relatives.

But he is redeemed by a wise stock investment in wheat which reverses his fortunes in relation to his brother-in-law Ed.