|Quarter of Hamburg|
|• Total||2.8 km2 (1.1 sq mi)|
|• Density||10,000/km2 (27,000/sq mi)|
|Time zone||CET/CEST (UTC+1/+2)|
Altona-Altstadt (help·info) is a quarter in Hamburg (Germany). Altona-Altstadt belongs to the Altona borough. The quarter's boundaries are congruent with the historic center of what has been the city of Altona until 1937.
Altona was founded in 1535 and became a city in 1664. In 1713 it was burned down by Swedish troops. In 1937 it became part of the city of Hamburg.