Altona-Altstadtⓘ is a quarter in Hamburg (Germany) that 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-Altstadt is located between the quarters of Ottensen, Altona-Nord, Sternschanze and St. Pauli.

In the south, it borders with the Elbe river.

These are the results of Altona-Altstadt in the Hamburg state election: