The Blue Beetle was an old time radio show that aired from May 15 to September 13, 1940, featuring the superhero character from Fox Features comic books. Created by Charles Nicholas, the series follows Dan Garrett, a rookie patrolman who becomes the Blue Beetle by donning bullet-proof blue chain mail. With the help of his friend and mentor, Dr. Franz, Garrett fights crime, leaving behind beetle-shaped markers as his calling card.

The radio serial aired as a CBS 30-minute syndicated series, with actor Frank Lovejoy providing the voice of the Blue Beetle for the first thirteen episodes. Known for his crime-fighting reputation, the Blue Beetle's arsenal included a revolver, a "Beetle-Mobile" car, a "BeetleBird" airplane, and a magic ray machine. While the show had a short run, it was exciting and action-packed, and the Blue Beetle character has continued to evolve in comic books to the present day.