William Sadler

William Sadler may refer to:

William Sadler (painter), Irish landscape painter
William Sadler (Medal of Honor), American sailor and Medal of Honor recipient
William Sadler (actor), American film and television actor
William S. Sadler, American surgeon and psychiatrist
William [Richard Sadler], American politician from Pennsylvania
Billy Sadler, American baseball pitcher
Bubby Sadler, American Negro league baseball player
Bill Sadler (engineer), Canadian race car designer, electrical and electronics engineer, aviation designer