The Süderelbe (German: ['zyːdɐˌʔɛlbə] ) (Southern Elbe) is the biggest anabranch of the Unterelbe river in the area which is now the Port of Hamburg, Germany. Its natural flow path was redirected through the Köhlbrand.

• List of bridges in Hamburg
• List of rivers of Hamburg

53°30′08″N 9°56′34″E / 53.5021°N 9.9427°E / 53.5021; 9.9427