St. Pauli Between Night and Morning (German: St. Pauli zwischen Nacht und Morgen) is a 1967 West German crime film directed by José Bénazéraf and starring Eva Christian, Helmut Förnbacher and Dunja Rajter. Shot and set in the St. Pauli red light district of Hamburg, it was one of a number of crime films produced in the era that used the city as a backdrop.
Helmut Schmidt a Zurich-based Interpol officer is seconded to Hamburg to infiltrate a gang of drug smugglers. Working out that it is based out of a nightclub, he recruits the French dancer Arlette to assist him in working undercover. But the two start a relationship and Schmidt begins to think of double-crossing his own police colleagues and fleeing abroad with Arlette and the cash from a planned robbery.