Hammermuseum Frankfurt, Hammer museum in Bahnhofsviertel district, Frankfurt, Germany

The Hammermuseum Frankfurt was a collection of hammers shown on the gallery of the first floor of the Schuhmacherei Lenz at Münchener Straße 36 in the Bahnhofsviertel. Oskar Mahler assembled hammers from all periods and for every conceivable use, and the display also cited artists such as Man Ray, Marcel Duchamp, Andy Warhol, Yoko Ono and Louise Nevelson, alongside Mahler's own hammer sculptures.

Oskar Mahler founded the museum in 2005 and built one of Germany's largest hammer collections during the following years. The exhibition closed in 2019, ending the project.

Artists like Man Ray and Marcel Duchamp used hammers as artistic material, and their works were displayed alongside traditional tools. The collection showed how this everyday object took on new meaning in modern art.

The museum occupied the mezzanine of the Schuhmacherei Lenz at Münchener Straße 36 in the Bahnhofsviertel. Because of static problems in the Gründerzeit building, no more than 15 visitors were allowed in at once, and new exhibits could not be added for weight reasons. A barrier-free entrance was not possible.

Many hammers in the collection came from unclear periods and their specific functions remained mysterious. Even experts could not always explain what these specialized tools were originally used for.