John Sigvard "Ole" Olsen and Harold Ogden "Chic" Johnson were American comedians of vaudeville, radio, the Broadway stage, motion pictures and television. Their shows were noted for their crazy blackout gags and orchestrated mayhem. Their most famous production was the play Hellzapoppin.

Hellzapoppin is a musical revue written by the comedy team of Olsen and Johnson, consisting of John "Ole" Olsen and Harold "Chic" Johnson, with music and lyrics by Sammy Fain and Charles Tobias. The revue was a hit, running for over three years, and was at the time the longest-running Broadway musical, with 1,404 performances, making it one of only three plays to run more than 500 performances in the 1930s.