The Port of Hamburg (German: Hamburger Hafen, pronounced [ˈhambʊʁɡɐ ˈhaːfn̩] ) is a seaport on the river Elbe in Hamburg, Germany, 110 kilometres (68 mi) from its mouth on the North Sea.

Known as Germany's "Gateway to the World" (Tor zur Welt), it is the country's largest seaport by volume. In terms of TEU throughput, Hamburg is the third-busiest port in Europe (after Rotterdam and Antwerp) and 15th-largest worldwide. In 2014, 9.73 million TEUs (20-foot standard container equivalents) were handled in Hamburg.

The port covers an area of 73.99 square kilometres (28.57 sq mi) (64.80 km² usable), of which 43.31 km² (34.12 km²) are land areas. The branching Elbe creates an ideal place for a port complex with warehousing and transshipment facilities. The extensive free port was established when Hamburg joined the German Customs Union. It enabled duty-free storing of imported goods and also importing of materials which were processed, re-packaged, used in manufacturing and then re-exported without incurring customs duties. The free port was abandoned in 2013.