Harald Paulsen was a German stage and film actor and director. He appeared in 125 films between 1920 and 1954.

"Mack the Knife" or "The Ballad of Mack the Knife" is a song composed by Kurt Weill with lyrics by Bertolt Brecht for their 1928 music drama The Threepenny Opera. The song tells of a knife-wielding criminal of the London underworld from the musical named Macheath, the "Mack the Knife" of the title.