"Sink the Bismark" (later "Sink the Bismarck") is a march song by American country music singer Johnny Horton and songwriter Tillman Franks, based on the pursuit and eventual sinking of the German battleship Bismarck in May 1941, during World War II.

Horton released this song through Columbia Records in 1960, when it reached #3 on the charts.

It was inspired by the 1960 British war movie Sink the Bismarck!

and was, with the producer John Brabourne's approval, commissioned from Johnny Horton by 20th Century Fox who were worried about the subject's relative obscurity in the United States.

Inexplicably, the size comparisons of guns and shells are switched.