The Bank Dick, released as The Bank Detective in the United Kingdom, is a 1940 American comedy film starring W. C. Fields. Set in Lompoc, California, Fields plays Egbert Sousé, a drunk who accidentally thwarts a bank robbery and ends up a bank security guard as a result.

The film was written by Fields, using the alias Mahatma Kane Jeeves (derived from the Broadway drawing-room comedy cliché "My hat, my cane, Jeeves!"), and directed by Edward F. Cline. The film also stars Una Merkel, Richard Purcell, Shemp Howard, Franklin Pangborn, Grady Sutton, Jessie Ralph and Cora Witherspoon.

In 1992, The Bank Dick was selected for preservation in the United States National Film Registry by the Library of Congress as being "culturally, historically, or aesthetically significant."