Bahrenfeldⓘ is a western quarter of the city of Hamburg in Germany, it is subject to the district/borough Bezirk Altona and was an independent settlement until 1890.

In 2006 according to the statistical office of Hamburg and Schleswig-Holstein, the quarter has a total area of 10.9 square kilometres (4 sq mi).

Bahrenfeld is located south of Lurup and Eidelstedt, west of Stellingen and east of Osdorf.

The southern boundaries to the quarters Othmarschen and Ottensen are the railway tracks of the city train.

[7] Parts of the world known Hamburg site of the research center DESY for particle physics, founded 1959, are located in the quarter.

According to the Department of Motor Vehicles (Kraftfahrt-Bundesamt), in the quarter were 8,942 private cars registered (337 cars/1000 people).

At this point the Bundesstrasse 431 is crossing the motorway, connecting Altona with Meldorf in Schleswig-Holstein.