railway (town); until 1946 German: Gerdauen; Polish: Gierdawy; Lithuanian: Girdava) is an urban locality (an urban-type settlement) in Pravdinsky District of Kaliningrad Oblast, Russia.

The settlers came in connection with the construction of a castle of the Teutonic Order, which is mentioned as completed in written sources from 1315 and 1325.

A lischke was formed around the castle, and was attacked by Lithuanians in 1336, 1347 and 1366, but prospered and in 1398 received Kulm law (city status) by the Grand Master of the Teutonic Order Konrad von Jungingen.

On June 16–17, 1807, it was the site of a victorious battle of Polish cavalry against the Russians, and the town was captured by the Poles.

Gerdauen was heavily damaged during fighting in World War I, but later rebuilt with monetary assistance from Wilmersdorf in Berlin, and the city of Budapest, Hungary.

The German population was expelled in accordance with the Potsdam Agreement and replaced with mostly Russian settlers.

In January 2024, one of two half timber framed warehouses, both of which are cultural heritage sites of the Kaliningrad region, was dismantled due to serious deterioration.