Postgebäude Schlüterstraße, Cultural heritage monument in Eimsbüttel, Germany.

The Postgebäude Schlüterstraße is a neo-Gothic brick telephone exchange built 1902–1907 at Schlüterstraße 51–55, designed by Paul Schuppan and Willy Sucksdorf. Its symmetrical main front on Schlüterstraße is 138 metres wide, and the building stands opposite the Museum of Ethnology near the University of Hamburg.

The Reichspost built the telephone exchange from 1902 to 1907 to designs by Paul Schuppan and Willy Sucksdorf. Long-distance switching began in 1908, and local exchanges I and Ia followed in 1910. On 2 May 1924 the NORAG radio station broadcast from the building; it moved out in 1931. Bombing damaged the building in 1943, and it was rebuilt between 1947 and 1951. It has been a protected monument since 1998.

The building's name comes from its role as a telephone exchange: the first north German radio station, NORAG, began broadcasting from the third floor on 2 May 1924, and announcer Hans Bodenstedt opened with the words "Hier ist die NORAG". A concert hall for live broadcasts faced the Binderstraße wing, and the roof carried an antenna between two 28-metre masts.

The building occupies the block between Schlüterstraße and Binderstraße in the Grindelviertel, a short walk south of the University of Hamburg's main campus with the Philturm and Audimax. The Ethnological Museum stands at the same height on Rothenbaumchaussee, parallel to Schlüterstraße. The former post office branch closed on 13 April 2021, and conversion into the Campus Schlüterstraße began on 21 October 2022, so expect construction work.

On 2 May 1924, the Nordische Rundfunk (NORAG), northern Germany's first radio station, began broadcasting from the third floor of the building. Its antenna was strung between two 28-metre masts on the roof, and announcer Hans Bodenstedt opened with the words "Hier ist die NORAG". A concert hall for live broadcasts faced the Binderstraße.